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Currently:76.7°F Dusk, Dry, Scattered clouds
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Comfort Index: Comfortable
 Updated21-Oct-2017 6:00pm @ 
 
Time of Next Full Update: 6:05 pm -  Station Elev: 1469 ft  
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Current Conditions

@ 21-Oct-2017 6:00pm
76.7°F Colder 3.8°F than last hour.
Temp Change: °F /hr
Dusk, Dry, Scattered clouds   Dusk, Dry, Scattered clouds
Feels Like: 77 °F
Humidity: 30%Increased 2% since last hour.
Dew Point: 42.9 °FDecreased 1.5°F since last hour.
Wind: Calm
---

 mph
Gust: 0.0 mph
Pressure: 29.97 in Rising 0.019 inHg/hour
Rising slowly
Solar Rad: 0%
0 W/m2
UV Index: 0.0
None
Rain Today: 0.00 in
Rain Rate: 0.00 in
Rain Month: 0.00 in
Rain Year: 7.05 in

Almanac

Sunrise: 6:38 AM
Sunset: 5:47 PM
Moonrise: 8:13 AM
Moonset: 6:41 PM
New Moon
New Moon, Moon age: 1 days,19 hours,59 minutes,4%
4%
Illuminated

Daily Min/Max

Today's High Temp: 82.1°F
2:43pm
Today's Low Temp: 58.3°F
6:24am
Today's High Humidity: 61%
6:24am
Today's Low Humidity: 28%
3:46pm
Today's High Dewpoint: 49.7°F
1:28pm
Today's Low Dewpoint: 42.9°F
5:49pm
Today's High Barometric Pressure: 29.988 in/Hg
11:30am
Today's Low Barometric Pressure: 29.758 in/Hg
12:06am
Today's High Wind Speed: 9.0 mph
3:43pm
Today's
High UV:
4.1
 Medium 
12:09pm
Today's
High Solar:
721 W/m2
12:09pm
Today's High Rain Rate: 0.000 in/min
7:00pm
Today's High
Hourly Rain Rate:
0.000 in/hr
Days Since
Last Rain:
58 Days

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The Monsoon Rainfall Page

The Pepperridge North Valley's Average Monsoon Rainfall Is: 3.43 inches

Thunder Heads develop over the open Desert         A rain shaft descends from a Thunderstorm over the open Desert


3 Day Monsoon Dewpoint Tracker

Outside Temp 

History    Dewpoint History

     As of:   6:00 PM   on:   10/21/17    The Temperature is:    76.7°F Colder 3.8°F than last hour.   The Dewpoint Temp is:   42.9 °F Decreased 1.5°F since last hour.    

Dewpoint Average must be at 55°F or higher for 3 days in a row to offically start the Monsoon Season!!


2016 Monsoon Summary ·  2015 Monsoon Summary ·  2014 Monsoon Summary ·  2013 Monsoon Summary
Monsoon Rainfall Stats ·  Alltime Top 5 Monsoons



THE 2017 MONSOON SEASON HAS BEGAN AT PEPPERRIDGE!

MONSOON 2017 - has now officially began using the old traditional method of the Dewpoint
As of July 8th we marked the third day in a row of a average Dewpoint at 55°F or above
This means that the season began on July 6th.!!

Pepper Ridge Dewpoint averages over the last 6 days.
July 3rd ---- 58.4°F July 6th*---- 57.5°F
July 4th ---- 54.7°F July 7th ---- 55.7°F
July 5th ---- 53.9°F July 8th ---- 57.6°F
The Monsoon has officially started at Phoenix Sky Harbor,on June 15th

July 8th - The Monsoon begings with intense heat as the low this morning was only a balmy 96.2°F
If that low holds through midnight tonight it will set a new All-time record high minimum for this station.
The current All-time record high minimium is 91.5°F set on July 16th, 2010.

Under all that intense heat it was the first real active day in mountains with Prescott receiving 1 inch of rain.
Those storms held to together as a convective complex and moved west all the way to the California border.
Even Lake Havasu City and Needles, Ca had thunderstorms and received measurable rain.
Some thunderstorms clip the extreme Northeastern Maricopa county but produced little rain
but the temperature fell to 94.8°F just before midnight but it is still the new All-time highest minimum!!

July 16th - Finally after teasing us the last 2 days wind strong winds and dust storms the Monsoon delivers.
More widespread rain falls across the Phoenix Metro area from nighttime thunderstorms
as compared to last couple days where rain mainly fell in the extreme Northwest part of the valley near Lake Pleasant.
Here at Pepperidge 0.90 inches fell between 10pm and Midnight ending a 67 day dry streak.
So far it appears the heaviest rain fell in west valley near Luke Airforce base with 1 1/2 inches to nearly 2 inches!!

July 21st - The beauty after a surprise evening thunderstorm moves through North Valley this evening
bringing meaningful rain to the Pepperridge where we recorded 0.37 inches of rain.
Parts of the East Mesa amd Apache Junction saw 0.75 inches and Central Phoenix saw up 0.50 inches

July 23rd & 24th - Monsoon starts with a big tease last night bringing wind and sprinkles to the North Valley.
Round two this morning brings another 1.00 inches to the Far East Valley on top of the 1.5 inches they saw last night.
Leaving 2.50 to 2.75 inches in places like Apache Junction, East Mesa, Queen Creek and even Buckeye.
The North Valley finally gets some moderate rain this morning for a little over an quarter inch with 0.28 inches.
Sky Harbor's the official gauge measured 0.40 inches over the last two active days

Thunderstorm over extreme North PhoenixJuly 29th - Thunderstorm activity returned to the valley this evening as storms moved off the rim into parts of Phoenix. The heaviest rain fell on the outer edges
of the valley where up to an 1 inch fell near Lake Pleasant and in parts of
Apache Junction. Another strong cell formed in the Southwest valley hitting near
Luke Air-force base with winds of up to 80 mph and up to 1.25 inches of rain!!

Another cell formed nearly directly overhead in the North valley as a brief heavy thunderstorm hit just after 5pm. Nearly 1/3 inch of rain fell in about 20 minutes!! The daily total was 0.32 inches, with 30 mph wind gusts at Pepperridge this cell moved southwesterly and dropped up to .60 inches on the Phoenix Mtn preserve near 7th st and Thunderbird roads. Meanwhile Sky Harbor received only 0.02 inches!!

July 31st - Isolated thunderstorms hit the extreme North Valley today dropping between 0.50 inches and 1.00 just east of Anthem and west of Cavecreek.
(pictured to the right) This storm barely moved south of the Carefree Hwy. Outflow winds peaked at 29mph were recorded here at Pepperridge but no rain fell.

This left us with 2.01 inches for July which is +0.95 inches above normal and the first above normal precipitation in July since 2011!!.
The average temperature at Pepperridge for July was 92.3°F the average high was 103.9°F and the average low was 80.8°F.
Sky Harbor received 0.89 inches for July which is (0.16) inches below normal with average temperature of 95.0°F which is near normal
Sky Harbor's average high was 106.2°F and average low 83.8°F. Rainfall varied widely in the valley with July totals of up to
4.25 inches in Apache Junction & Queen Creek to areas with less than 0.50 inches such as at Jomax road and I-17!!

Aug 3rd - Intense Thunderstorms this evening hit parts of Phoenix Area with strong winds and heavy rain
Parts of North Phoenix received 1.00 inch of rain and the storm drop 0.51 inches at Pepperridge in about 25 minutes.
The heaviest and stongest thunderstorms occured in south central Phoenix near the Phoenx Zoo and Tempe.
With many of these areas seeing high winds, downed trees, street flooding and over 1.75 inches of rain.
Sky Harbor received 0.92 inches of rain and a landspout weak Tornado was detected a few miles south of the airport.
The East Valley also had thunderstorms and received between 0.50 inches and 1.35 inches from these storms!!

Aug 13th - Strange night thanks to the Westerlies influence creating a weather pattern more like mid September than August
slow moving storms moving from west to east kept hitting the same areas for several hours from 9:30pm last night to 6 am this morning.
Areas in the southwest valley saw up to 2 inches in Glendale as well as extreme south Phoenix.
In the east valley mainly south of the US 60 saw many areas with over an 1 inch of rain.
Meanwhile in the Northeast valley there was lots of wind and thunder and lightning in the distance for hours.
A brief shower drop 0.02 inches shortly after midnight here at Pepperridge. Finally after hours of nothing but noise
light to moderate showers fell in North valley between 4 and 6 am totaling 0.16 inches
and the storm total was a disappointing 0.18 inches, Sky Harbor officially measured 0.36 inches.

Aug 23rd - After another 10 days of unusually dry August weather thunderstorms returned to the valley.
A dust storm rolled into the Southeast valley but it produced only light showers but the outflow winds led to new thunderstorms.
Around 9:30pm thunderstorms formed in the north valley. Areas near Moon Valley saw up to 0.50 inches.
The northwest valley also saw around 0.50 inches in northern Peoria. Here at Pepperridge 0.27 inches of rain fell from this thunderstorm.

Aug 31st - Unusually dry weather prevailed for the rest of the month with thunderstorms being restricted to the High country.
For month Pepperridge received 0.96 inches which in (0.41) inches below the August normal of 1.37 inches
Sky Harbor fared better with 1.43 inches which was +0.43 inches above their August normal of 1.00 inches
For the season so far Pepperridge has received 2.97 inches which +0.47 inches of the season to date normal of 2.50 inches.
Sky Harbor has received 2.32 inches which is +0.25 of the season to date normal of 2.07 inches!!

Sept 30th - Unusually dry weather prevailed for most of the month September with thunderstorms being restricted to the High country.
In fact the second half of the month was relatively dry even for the high Country as Westerlies prevailed most of the month.
The only storms to effect the valley occurred on Sept 8th leaving a Trace of rain at Pepperridge and
about 0.50 inches in the extreme eastern part of the valley near Queen Creek and Apache Junction.
For the month both Pepperridge and Sky Harbor received only a Trace of rain , in fact Pepperridge went the
final 37 days of the Monsoon season with no measurable rain. Pepperridge's last measurable rainfall was 0.01 inches on Aug 24th!!
With no measurable rain recorded in September was (0.93) inches below normal & tied 2001 for driest September on record!!

For the season Pepperridge received 2.97 inches which is (0.46) inches below the normal 3.43 inches and the 10th driest on record.
Sky Harbor received 2.32 inches which is (0.39) inches below the normal of 2.71 inches the 62nd wettest on record
with the last official measurable rainfall of 0.06 inches back on Aug 23rd!!



Monsoon 2017 Summary and Wrap Up

Monsoon 2017- was characterized by two contrasts the active wet period from mid July to mid August.
This was followed by a fairly dry final 6 weeks of the season. This year there was really no major inter-action with Eastern Pacific
Hurricanes these storms usually move up the coast of Baja and inter-act with seasonal low pressure systems that enter the state,
these seasonal transitional events usually send rich moisture into the state and produce September thunderstorm outbreaks.

Monsoon Rainfall - Everybody seems to love the rain, especially in the desert, but the nature of summer storms doesn't mean
everyone will receive the same amount of rain. A small distance of even a mile can mean the difference between
an intense downpour or seeing no rain at all. (The map below left shows the rainfall this summer across the valley).
The big winners in valley were East Mesa at Power and Mc Dowell with 5.08 inches and Queen Creek with 5.94 inches!!

Pepperridge received 2.97 inches for the season which is (0.46) inches below the normal 3.43 inches with 2.01 inches falling in July
The greatest 24 hour total was 0.95 inches on July 16th, August 3rd received the 2nd greatest with 0.51 inches!!
There were only 12 days with measurable rainfall for the season, eight of them occured in July and there were
only 7 days with with at least 0.10 inches or more with four of them in July. Only 2 days received more than 0.50 inches.
Suprisingly there were only 4 days of measurable rain that occured after July 31st and all of days were in August!!

Officially Sky Harbor measured 2.32 inches for the season which (0.32) inches below the official normal of 2.71 inches,
their greatest 24 hr total occured on Aug 3rd with 0.92 inches!! Their second greatest 24hr total was on Jul 16th with 0.38 inches!!
Sky Harbor had 14 days of measurable rain for the season, with 6 days that were greater than or equal to 0.10 inches and only one
greater than 0.50 inches. There were only 5 days of measurable rain that ocurred after July 31st all of them also in August!!

Rainfall totals varied across the state with Flagstaff receiving 8.36 inches just +0.05 inches above normal and the big winner was
Tucson with 8.57 inches or +2.49 inches above normal but 6.80 inches fell in 2 weeks in July their wettest on record!!

Other totals accross the state include; Grand Canyon 5.13 inches, Kingman 5.08 inches, Prescott 7.48 inches,
Payson 8.65 inches and Show Low 7.52 inches. In Southeast Arizona Douglas received 6.91 inches, Oracle 13.73 inches,
Nogales 9.30 inches, Safford 7.04 inches, Sierra Vista 6.18 inches and Willcox 6.67 inches!!

Maricopa county rainfall
Phoenix Yuma  rainfall totals
Maricopa County Monsoon 2017 rainfall
(click on image for larger view)
Phoenix and Yuma Average High Temps 2017
(click on image for larger view)

Monsoon Heat - The heat was a factor again this summer with early Monsoon dry and hot, the heat peak this year on June 20th
when Phoenix hit a high of 119°F degrees, which tied for the 4th hottest temperature EVER recorded in Phoenix.
In the North Valley Pepperridge recorded 117°F degrees that same day tieing the hottest EVER for our location.
This was the just start of 10 day period of 110°F+ heat around the valley one of the hottest periods in Phoenix history.

Also in early July we set a new all-time high minimum in the North Valley with a low of 94.8°F on July 8th
the old record was 91.5°F on July 16, 2010
In all, Officially Phoenix hit 110°F or hotter twenty-four times this year
all of those days occurred during the Monsoon. By comparsion here in North valley there were 10 days at 110°F or better.

Phoenix 10 yr Monsoon Rainfall Dry September - September started off just like August ended as it was hot and dry
with it hitting well over 100°F the for first two weeks with the heat officially peaking with a high of 110°F on Sept 13th setting a new daily record!!

Just 9 days later a dry cold-front moved through and it was only in upper 80s. The Autumnal Equinox arrived on Sept 22nd and there were 4 days in a row
with highs only reaching in the 80s at Sky Harbor, making it the coolest September streak since 1996!! In fact this sort of cool streak has only occured 4 times
in the last 50 yrs during the month of September!!

In the north valley we had 6 days in a row and 80s and 4 nights in row
in the mid to upper 50s including a tie of the all-time September low with 55.4°F
on Sept 25th it was also 55.4°F on Sept 21st, 2004!!

This front all but assured the end of the Monsoon scouring out the remaining Monsoon moisture with it's cool dry air. Thunderstorm activity was mainly limited to the mountains all month and for the final month of the Monsoon only a Trace of rain was recorded at both Sky Harbor and Pepperridge!! The chart to above right shows the last 10 years of monsoon rain totals for Sky Harbor.





THE 2016 MONSOON SEASON HAS BEGAN AT PEPPERRIDGE!

MONSOON 2016 - has now officially began using the old traditional method of the Dewpoint
As of June 28th we marked the third day in a row of a average Dewpoint at 55°F or above
This means that the season began on June 26th.

Pepper Ridge Dewpoint averages over the last 6 days.
June 23rd ---- 55.0°F June 26th*---- 56.7°F
June 24th ---- 53.9°F June 27th ---- 59.5°F
June 25th ---- 53.9°F June 28th ---- 60.8°F
The Monsoon has officially started at Phoenix Sky Harbor,on June 15th

June 28th - The Monsoon has began and we had our first measurable rain on June 27th
when 0.01 inches fell from weak isolated thundershowers that effected parts of the valley.

June 29th - The first real outbreak of the thunderstorms hit the valley this evening primary in the east valley
where 1.50 inches fell in extreme north Mesa at the granite reef dam on the Salt River.
Other parts of the east valley saw up to 1/2 inch, here in the North Valley moderately heavy rain fell,
winds gusted to 23mph and we measured a total of 0.15 inches at Pepperridge North Valley

Wet Microburst over South Mountain July 19th - The monsoon finally returns to the valley after long break when isolated thunderstorms effected the mainly the South Mountain and Ahwatukee area where a wet microburst hit (pictured to the right) dropping 2/3 inch of rain on South Mountain. Sky Harbor received 0.36 inches from this storm but here in the North Valley we received nothing

July 29th - After another break a severe thunderstorm formed over South Scottsdale and Tempe area when the outflow boundries of two thunderstorms collided one from a dissipating thunderstorm to north and another from the east this storm drop up to 1 Inch of rain in southern Scottsdale and near the Phoenix zoo. Parts on Chandler saw up to 0.75 inches and Sky Harbor received 0.53 inches and recorded a substain wind of 53 mph and a gust of 70 mph, this caused flight delays for the airport. Meanwhile at Pepperridge North Valley we had brief moderately heavy rain and a 29 mph wind gust and recorded our first mesurable rain of the month with a mere 0.05 inches

July 31st - Another tease as storms moved accross the extreme northern fringes of the valley rain fell mainly from Horseshoe Lake to Lake Pleasant and near Wickenburg where up to a inch fell meanwhile Pepperridge North Valley only saw clouds and winds
We recorded substained winds of 21 mph with gusts to 32 mph which was the strongest gust of month but only a Trace of rain
So for the Month we saw the 2nd hottest July on record with 94.6°F, Jul 2009 still holds the record hottest month ever with 94.9°F.

But 2016 is now the driest July on record with only 0.05 inches (1.07) inches below normal the old record was 0.13 inches in
2000 and 2009. Sky Harbor even beat us and received 0.89 inches for the month which is closer to the normal of 1.12 inches.

In addition the average July high was 105.7°F 3rd hottest ever behind 106.1°F in Jul 2005 and 106.0°F Jul 2009
The average July low was 81.8°F 3rd warmest behind 82.2°F July 2009 and 82.1°F in both Aug 2011 & Aug 2015

Aug 2nd - Another active day for parts of state and valley with heavy rain falling. The heaviest rain in the valley fell
just northwest of downtown with 2.91 inches fallimg near Grand Canyon University and 2.50 inches in Encanto area.
This lead to localized street flooding including the flooding of the underpass at I-17 and Indian School which was closed for 5 hours
Heavy rain also fell near Anthem & New River with 1.50 inches, Old Town Scottsdale also received 1.50 inches as did Falcon Field.

Sky Harbor recorded 0.15 inches and here at Pepperidge we saw 0.18 inches as the storm primarly missed us again.
For the season Pepperridge has only received 0.39 inches more than a 1.25 inches below normal at this point in the season.

Aug 5th - A surprise early morning thunderstorm effected parts of the central Phoenix valley today
It started as a storm that form near South Mountain and moved north where it intensified
Parts of south central Phoenix received 0.75 inches to nearly an Inch and Sky Harbor received 0.52 inches
Finally in the north valley we received rain when 0.29 inches fell between 7:30am and 8:30 am followed by a brief break
a second wave turned into a heavy thunderstorm dumping 1.25 inches between 8:45am and 9:30 am the with the bulk of that
in just 30 minutes causing major street flooding across parts of the north valley and northeast Scottsdale.

When the storm finally ended Pepperridge North Valley had recorded 1.55 inches bringing the monthly total to 1.73 inches
and a few points to the north in the mountains near Pinnacle Peak in North Scottsdale had up to 2.50 inches!!!
This single storm brought us back to closer to normal with 1.94 inches for the season so far.

Aug 20th - Another evening of Strong Gusty Winds and Isolated Thundershowers in the North Valley.
This evenings Thunderstorm produced a peak gust of 30 mph with substained winds of 22mph and it was followed by a little rain.
The heaviest rain appears to have fallen near Wickenburg with up to 1 inch and a few spots with extreme Northeast Valley saw up
to 0.50 inches. Here at Pepperridge we recorded a meager 0.08 inches which brings the monthly total to 1.85 inches
and the season total to 2.06 inches, the bulk of that falling in the Aug 5th storm which produced 1.55 inches!!!

Lightning Over the McDowell Mountains on Aug 23rd Aug 22nd - Isolated thunderstorms effected parts of the Phoenix Metro and Maricopa County this afternoon. One Area of heavy rain was near Wickenburg where about 0.75 inches fell and about 0.50 inches fell in Peoria. Another isolated thunderstorm that produced heavy rain was just 5 miles Southwest of here where between a 0.50 inches to nearly an 1.00 inch fell this was in the area around Phoenix North Mountain Park and 7th Street and Thunderbird.

Meanwhile here at Pepperridge we received another meager amount as just 0.04 inches fell to put this in perspective so far this summer we have had 10 days of measureable rain but only THREE of those days have exceeded 0.10 inches!!!

Aug 23rd - Some decent rain from overnight thunderstorms in the Phoenix Metro area the thanks to the unseasonable low pressure from the west that created a more fall like transitional pattern that usually happens in the month of September towards the end of the Monsoon season. This storm dropped between 0.10 inches at
Sky Harbor to about 0.60 inches in Northern Peoria. Pepperridge received 0.27 inches bringing the monthly total to 2.16 inches and the season total to 2.37 inches. This storm also produced the coolest overnight low since Jun 15th the low this morning was a nice cool 68.8°F the last time we fell below 70°F the low that morning was 66.8°F!!

Aug 25th - 26th - Thunderstorm activity continued across mainly the North and Northwest parts of the valley.
Between 0.25 inches and 0.60 inches fell in parts of the northern valley including 0.60 inches Northern Peoria and
heavy rain fell in the mountains North of the Valley including some areas near Crown King receiving over 2 inches.
Here at Pepperridge North Valley the two day total was 0.39 inches bringing the monthly total to 2.55 inches

Sept 7th - The remnants of Tropical Storm Newton began effecting the North Valley early this morning
The bulk of the moisture slammed into Southeastern Arizona where 1 to 3 inches fell beginning on 6th thru 8th
Overnight some areas of extreme southern Maricopa country near Gila Bend saw 1 inch of rain from the system
In Phoenix a few areas mainly in Southwest valley near Buckeye saw up to 0.50 inches of rain.
Here at Pepperridge only 0.17 inches fell in early morning which was a big disappointment.

Sept 19th - 20th - Moisture from a second tropical system Payne began effecting the state this combined with a cutoff Low.
This low pressure moved up near Yuma bringing moderate rain to Southwestern Arizona and Northwestern Arizona.
Rainfall amonts varied between 0.25 inches along the Colorado river basin up to 1.50 inches near Prescott.
Here in Phoenix clouds and humid air brang sprinkles and up to 0.10 inches of rain and Pepperridge recorded a trace.

Sept 22nd - A cold front followed the cut off low and swept through the state and reacted with the remaining tropical moisture
This front caused showers and thundershowers to move through the Phoenix Metro area today where between an 0.10 inches
to 0.75 inches fell in the area, the heaviest rains were from afternoon thunderstorms in Camelback and Arcadia areas.
Here in the north valley at Pepperridge we received a decent amount with 0.40 inches of rain.

Sept 28th - 30th - A cut off low pressure has brought spordic rain mainly to the mountains and Southeast Arizona
While the mountains and Southeast Arizona saw an 1 inch plus over the period the deserts have seen 0.25 inches or less.
Here in Phoenix dust storms hit on the 28th and 29th and brought little rain 0.02 inches at Sky Harbor
Here a Pepperridge we only managed to get 0.01 inches on the 29th bringing Sept total to 0.59 inches which is about (0.36) inches
below normal. The final Monsoon Total was 3.35 inches at Pepperridge which is slightly above the season normal of 3.22 inches.
Sky Harbor the official tally for Phoenix saw 2.49 inches which (0.22) inches below normal of 2.71 inches.

Flagstaff with 11.41 inches, Kingman with 4.27 inches and Tucson with 7.39 inches saw well above normal season totals.


Monsoon 2016 Summary and Wrap Up

Monsoon Rainfall - Everybody seems to love the rain, especially in the desert, but the nature of summer storms doesn't mean
everyone will receive the same amount of rain. A small distance of even a mile can mean the difference between
an intense downpour or seeing no rain at all. (The map below left shows the rainfall this summer across the valley).

The big "winners" here were in the Central Phoenix area along I-17, SR-51 and Loop 202 corridor north into Scottsdale.
The official gauge at Sky Harbor International Airport in Phoenix received 2.49 inches of rain which is a little below the
seasonal normal of 2.71. However, it is the 55th wettest monsoon in Phoenix since 1895. Here in The North Valley
Pepperridge saw 3.35 inches of rain which 0.13 above normal. The 9th wettest Monsoon.

Further west, Yuma received just .89 inches of rain which is also below the seasonal normal of 1.29 inches
and is the driest monsoon since 2011. Imperial, CA received just .16 inches, much of that in late September. This is also the driest monsoon for Imperial since 2009 when the area saw just a trace. Lastly Blythe, CA saw .54 inches.

During the Monsoon, Phoenix saw 14 days with measurable rainfall and another 13 days with a trace. The wettest day at
Sky Harbor was July 29th with 0.53 inches of rain. Meanwhile, Yuma had five days
with measurable rain and another six with a trace. The wettest day in Yuma was July 25th with 0.37 inches of rain.

Here in the North Valley we saw 17 days with measurable rainfall 8 of those days were > 0.10 inches
and only 4 days exceded 0.25 inches the wettest day was August 5th with 1.55 inches.
July was the driest ever with only 0.05 inches of rain all which fell on July 29th!!!


Maricopa county rainfall
Phoenix metro rainfall totals
Maricopa County Monsoon 2016 rainfall
(click on image for larger view)
Phoenix and Yuma Average High Temps 2016
(click on image for larger view)

Big Heat - The heat in the desert southwest is no joke, and this year on June 19th, Phoenix hit a high of 118°F degrees, which tied
for the 5th hottest temperature EVER recorded in Phoenix. In the North Valley Pepperridge recorded 117°F degrees that same day
the hottest EVER for our location.
In all, Offically Phoenix hit 110°F or hotter 30 times this year and twenty-six
of those days occurred during the Monsoon. By comparsion here in North valley there were 9 days at 110°F or better.

On the same June day, the mercury in Yuma hit 120°F degrees. Yuma hit 110°F or hotter 31 times this year
and twenty-eight of those days were during the Monsoon. (see graphic above right for average highs this summer)

The heat can be deadly. Heat is our biggest weather killer in Arizona. Checkout this link for heat safety information: Heat saftey Tips



THE 2015 MONSOON SEASON HAS BEGAN AT PEPPERRIDGE!

MONSOON 2015 - has now officially began using the old traditional method of the Dewpoint
As of June 27th we marked the third day in a row of a average Dewpoint at 55°F or above
This means that the season began on June 25th.

Pepper Ridge Dewpoint averages over the last 6 days.
June 23rd ---- 52.1°F June 26th---- 58.8°F
June 24th ---- 50.9°F June 27th ---- 58.9°F
June 25th* ---- 55.9°F June 28th ---- 60.9°F
The Monsoon has officially started at Phoenix Sky Harbor,on June 15th

July 18th & 19th - Arizona and Southern California began to feel effects of Hurricane Dolores.
The storm curved toward the north-northeast off the coast of Baja California and began to weaken.
She was downgraded to a tropical storm on Friday July 17th and degenerated into a post-tropical low-pressure on July 18th.
Her last reported location on Saturday evening was about 300 miles west of the Baja California coast.

At the same time a unseasonally strong cut off low pressure was postioned off the Southern California coast
the combination of this low pressure and the monsoonal flow helped pull the rich tropical moisture into the Desert Southwest.
This pattern set up the stage for a outbreak of potentially heavy rainfall by enhancing the monsoonal flow,
but the unusually strong low pressure off Calif pulled most the rich tropical moisture into Southern California.
This helped Los Angeles and San Diego to break their all-time July rainfall records on Saturday, July 18th
This pattern also led to severe thunderstorms and flash flooding in the remote California desert that
caused the collapse of a eastbound bridge on Interstate 10 near the Desert Center on Sunday July 19th!!!

Meanwhile parts of southwestern Arizona and Northwestern Arizona saw heavy rain both days
The closest these storms came to Metro Phoenix was an outbreak of severe thunderstorms near Wickenburg
These storms dumped up to 3 1/2 to 4 inches of rain in a few hours in isolated spots on July 18th
This caused major flooding in some neighborhoods and along washes near the Hassayampa River.

Here at Pepperridge a meager 0.18 inches of rain fell on Saturday July 18th and a few spots in the valley saw up to 0.50 inches
This storm brang the July total at Pepperridge North Valley to a disappointing 0.21 inches which is way below normal
On July 20th the southwesterly flow again took hold surpressing the Monsooon moisture to far Eastern Arizona and New Mexico

Jul 31st - We are still waiting on the first Major storm of the season in the North Valley
While parts of the valley saw up to 1+ inch of rain we recorded a mere 0.01 inches
Even Sky Harbor saw 0.72 inches today making the monthly total 1.13 inches near normal
Meanwhile Pepperridge only saw 0.22 inches for the month (0.90) inches below normal the 2nd driest on record
Only July 2000 and 2009 saw less tied for the driest on record at 0.13 inches!!

Interest side note this is the first time that both May at 1.48 inches & Jun 0.51 inches saw more rain than July
Normally May and Jun combined average is just 0.13 inches!!!

Aug 11th - Monsoon 2015 continues to disappoint here in the North Valley we saw two Major Dust Storms
moved through the valley today one in the morning and another this evening but little rain fell here.
Again the East Valley saw decent rain with up to 1/2 inch to even 1 inch in isolated spots
Meanwhile up here in the north valley 0.01 inches from the morning storm and 0.08 inches this evenings storm
This brings August to only 0.10 inches and the season to unimpressive 0.46 inches the driest since 2009

In contrast normally we would have about 1.50 inches at this point in the season and
last year at this time the mid point of the season we had 2.14 inches

Aug 25th - NONsoon 2015 continues to disappoint another dust storm & Thunderstorms approached from the south only to fizzle out.
Again parts of East Valley saw some decent rain mainly south of US 60. where parts of Ahwatukee, Chandler, Mesa
and Gilbert saw up to .50 inches in some isolated spots with some minor wind damage

Meanwhile areas further North and West saw little if anything from this storm including Central Phoenix
At Pepperridge we had light rain resulting in 0.02 inches which brings August to a dismal 0.12 inches
For the entire Monsoon Season only 0.48 inches has fallen only 2009 was drier at this point with 0.47 inches.

Again it is suppose to dry out as the Monsoon High shifts further south again out of it's Normal 4 corners location
which brings a dry Southwesterly flow & less chance of thunderstorms if this hotter drier weather returns to close out August
We will see the 3rd Driest August, Driest Monsoon thru Aug 31st and hottest August on record!!!

Aug 29th - Again for the second time in three days isolated thundershowers effect parts of the valley
On the 27th the Northwest, Southwest and Parts of the East Valley saw decent rain of up to an 1 Inch
Tonight again the East Valley saw rain with Chandler, Mesa and Tempe seeing the most at up 3/4 of inch
Which means near the main ASU campus both storms delivered a total 1.75 inches.

Meanwhile the North Valley saw sprinkles to light showers from both Thursday's and Saturday's storms.
Pepperridge North Valley had wind and trace of rain on Thursday tonight more wind and a brief thundershower brings 0.06 inches
This leaves August precipitation total at a mere 0.18 inches and the entire Monsoon season at only 0.54 inches.
We are still on track for 3rd driest August, 2nd Hottest August and driest Monsoon thru August 31st at only 0.54 inches

Aug 31st - Tonight's storm formed well South of here and moved in a Northeasterly direction unusual for the Monsoon
It left up to an 1.50 inches of rain in south Central Phoenix and caused flooding and wind damage and at Sky Harbor
Which measured a 61mph wind gust and 0.37 inches of rain bringing August to 1.29 inches near normal
and 2.48 inches for the Monsoon thru Aug 31st which means Sky Harbor is near normal for the season

Only a wind and a lightning show here in the North Valley as the storm passed to Southeast about 5-10 miles away.
This means that here at Pepper Ridge North Valley we will end August with only 0.18 inches
The 3rd Driest August on Record!! and for the Monsoon only 0.54 inches has fallen making it the driest on record thru Aug 31st!!
The previously driest to this point was 2009's 0.67 inches. Records date back to 1997 at this station.

Also the average temp for Aug 2015 was 93.6°F the second Hottest August on Record behind Aug 2011's 94.1°F
This average temperature also ties July 2003 for the third hottest month ever!!

Another interesting note May & Jun were wetter with 2.01 inches than July & August with only 0.40 inches another 1st at this station
where the normally two driest months normally see 0.13 inches beat two of normally wettest months which see 2.49 inches!! Normally we should have about 2.56 inches at this time during the Monsoon
I blame El Nino for this as the westerlies have never completely disappeared this summer
forcing the Monsoon High to remained south of it's normal 4 corners position!!!

Sept 13th - Finally the first major thunderstorm/rain event of the Monsoon hit's West Valley and Northern parts of Valley tonight
This includes Pepperridge North Valley where 0.35 inches of rain fell mainly between 10pm and 11pm.
This is thanks to the first transitional event as a low pressure coming in from California reacted with the Monsoonal moisture
The storm dropped 0.59 inches of rain here in the north valley doubling the seasonal total which had stood at a mere 0.54 inches
With this precipitation 2015 is now only the 2nd driest Monsoon at 1.13 inches leaving 2009's 0.69 inches the driest ever!!

Sept 22nd - The forcasted Major Phoenix rain event of widespread rain event on Monday and Tuesday never materialized.
The forecast predicted 2 to 3 inches of rain from Tropical depression 16E never materialized on Monday
As the bulk of the moisture shifted East hitting parts of Southeastern Arizona with 2 to 3 inches of rain.
Today brought isolated Severe Thunderstorms to parts of the valley with Downtown Phoenix, North Scottsdale
and East Mesa receiving 1 to nearly 2 inches of rain that caused flash flooding in isolated areas.
Most everyone else in the valley saw lite rain or none at all from the tropical storm system.
At Pepper Ridge only a Trace fell both days leaving the Monsoon Season total at only 1.15 inches which is
(36% of Normal) and leaves 2015 as the second driest Monsoon todate, with only 8 days left to go in the season.

Sept 30th - The 2015 Monsooon is officially over it will remain the second driest ever in the north valley
Here at Pepperridge only 1.15 inches fell which is (2.07 inches) below normal of 3.22 inches or (36% of Normal)
Meanwhile offically at sky harbor they faired much better with 3.29 inches compared to a normal of 2.71 inches.

For More details see: Monsoon 2015 Review


THE 2014 MONSOON SEASON HAS BEGAN AT PEPPERRIDGE!

MONSOON 2014 - has now officially began using the old traditional method of the Dewpoint
As of July 5th we marked the third day in a row of a average Dewpoint at 55°F or above
This means that the season began on July 3rd. This was also the night of the first big dust storm "Haboob".
However no measurable rain has fallen yet in the North Valley.

Pepper Ridge Dewpoint averages over the last 6 days.
June 30th ---- 53.9°F July 3rd*---- 59.1°F
July 1st ---- 48.9°F July 4th ---- 64.4°F
July 2nd ---- 49.7°F July 5th ---- 62.7°F
The Monsoon has officially started at Phoenix Sky Harbor,on June 15th

Jul 3rd - 1st Major Dust storm of the season only a trace falls here
However outside the city heavy rain falls in Maricopa and other areas.

Jul 26th - Finally some beneficial rain from last night's intense severe thunderstorm
Heavy rain and winds with 1.03 inches here 0.54 inches of that fell between 11:10pm and 11:20 pm.
But lots down trees just to East of here looks like micro-burst hit the area...
This storm ended the 90 day streak without measurable rain the 6th longest in station history.

Aug 1st - Late evening thunderstorms hit the north phoenix and the west valley
The storm drops 0.37 inches of rain here while parts of Glendale received 1.5 inches

Aug 2nd - Low Pressure from Baja Californina brings another round of thunderstorms
These storms dump 0.71 inches on Pepperridge this ends a wet week in the north valley
After 90 days of no measurable rain 2.11 inches have fallen since July 26th!!!

Aug 12th - An active evening and night for parts of the valley starting in early evening
The East Valley and then South Phoenix especially around South Mountain with 2.5 inches
Finally in late evening the North Valley got in the act with some showers mainly light
but a breif downpour of 0.50 inches hit around 9:30pm leaving this station with 0.65 inches for the day.

Aug 19th - Record rainfall event in parts of Northern Maricopa and Southern Yavapai Counties
This was due to influence of low pressure off California and a strong Monsoonal Flow.
Between 4 & 5 inches of rain fell from Thunderstorms in the mountains above New River to Cave Creek
This led to widespread flooding in New River and Black Canyon City and Along I-17.
Record Flood stage flows were also recorded along the Aqua Fria River, Skunk Creek, Cave Creek & their tributaries

Here a Pepperridge we saw the most rain in single day since Sept 6th & 7th, 2006 storm which drop 2.76 inches
Today 2.31 inches fell in primarily 2 thunder storms, the first drop 1.23 inches between 6:18 am and 7:18am
with 1.07 inches of rain between 6:30am and 7:00am the second round of thunderstorms started about11:45am
This storm drop another 0.96 inches between 11:45am and 12:15pm another evening storm brought only lite rain here.
The daily total was 2.31 inches bringing August to a record 4.25 inches & the Monsoon total to 5.28 inches 3rd Wettest on Record

Sept 8th - Another Record rainfall event for the Valley thanks to tropical moisture from former hurricane Norbert
Heavy rains fell across the valley leading to 2 to 5 inches of rain causing major street flooding
Sky Harbor set a new all-time daily rainfall record of 3.29 inches the old record was 2.91 inches in 1933
At Pepperridge a daily rainfall record was set with 2.51 inches which is shy of all-time record of 2.79 inches in Feb 2003
However this was the second 2 inch plus daily rainfall in month pushing the Monsoon total to 8.25 inches
This ties 2006 for the wettest monsoon season on record and the second wettest September at 2.89 inches

Sept 27th - A early season Fall storm and Cold front brings the end to 2014 Monsoon season
Severe thunderstorms rolled across the valley with damaging winds and heavy rain and localized flooding
Sky Harbor received 1.64 inches bringing Sept to 5.11 inches 2nd wettest September on record
Parts of the East valley received over 2.5 inches with localized flooding
Here a Pepperridge we received 0.83 inches bringing Sept to 3.82 inches the 2nd wettest behind 2006
2006 remands the wettest September at 5.24 inches However the latest rains help 2014 pass 2006 as
the wettest monsoon with 9.18 inches during the season which beats 2006's 8.25 inches




Monsoon Rainfall for Pepper Ridge # 1 North Valley Phoenix - 2009 - 2017

YEAR 2009 2010 2011 2012 2013 2014 2015 2016 2017 MAX MNTH MIN MNTH MNTLY AVG
JUN 0.00 0.00 0.00 0.00 0.00 0.00 0.14* 0.16* 0.00 0.96 0.00 0.07*
JUL 0.13 0.56 2.36 0.76 0.87 1.03 0.22 0.05 2.01 4.03 0.05 1.06
AUG 0.54 0.86 1.13 1.19 0.20 4.33 0.18 2.55 0.96 4.33 0.07 1.37
SEP 0.02 0.21 0.08 1.47 2.22 3.82 0.61 0.59 T 5.24 0.00 0.93
Min Month 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.05 0.00 0.96 0.02 0.69 season
Max Month 0.54 0.86 2.36 1.47 2.22 4.33 0.61 2.55 2.01 5.24 0.13 9.18 season
Avg/Totals 0.69 1.63 3.57 3.42 3.29 9.18 1.15 3.35 2.97 ---- ---- 3.43

Monsoon Normals are based on the years 1997- 2016

*0.07 in 1999 , 0.05 in 2006, 0.37 2015 & 0.05 2016 Fell Before Jun 15 and is not included in Monsoon Totals
Monsoon Rainfall is statistically measured from June 15th thru Sept 30th!!




2012 Monsoon Summary ·  2011 Monsoon Summary ·  2010 Monsoon Summary ·  2009 Monsoon Summary ·  2008 Monsoon Summary


THE 2013 MONSOON SEASON HAS BEGAN AT PEPPERRIDGE!

The 2013 Monsoon Season Officially began as of 6/30/13
Today July 2nd marked the third day in row with a average dewpoint
reading at 55.0°F or higher, this marks the begin of the season based on older
criteria of dewpoint*, by the newer set date system the season began on June 15th!!

Pepper Ridge Dewpoint averages over the last 6 days.
June 27th ---- 45.4°F June 30th*---- 57.8°F
June 28th ---- 47.4°F July 1st ---- 59.9°F
June 29th ---- 51.5°F July 2nd ---- 60.5°F
The Monsoon has officially started at Phoenix Sky Harbor,on June 15th

Dry August only 0.20 inches falls in the North Valley making it 3rd driest on Record

September brang the return of a wetter Monsoon pattern with 1.68 on Sept 9th
Thanks to a tropical conection with the remants of Tropical Storm Lorana off Baja
The month ended with 2.22 inches of rain the second wetest September on Record!!

Sept 30th, 2013 - Monsoon 2013 ends with 3.29 inches which is +0.07 of normal


THE 2012 MONSOON SEASON HAS BEGAN AT PEPPERRIDGE!

The 2012 Monsoon Season Officially began as of 6/26/12
Today June 28th marked the third day in row with a average dewpoint
reading at 55.0°F or higher, this marks the begin of the season based on older
criteria of dewpoint*, by the newer set date system the season began on June 15th!!

Pepper Ridge Dewpoint averages over the last 6 days.
June 23rd ---- 43.5°F June 26th*---- 55.4°F
June 24th ---- 54.7°F June 27th ---- 59.2°F
June 25th ---- 52.6°F June 28th ---- 58.9°F
The Monsoon has officially started at Phoenix Sky Harbor,on June 15th

June 27th - Marked the first major Dust Storm of the season due to thunderstorm outflows from
storms near Case Grande. It appears that high pressure system will move back overhead this weekend
bringing excessive heat and a temporary break in monsoonal moisture flow
through early next week. So the season is here but little storm impact is expected for now.

July 14th - Major Thunderstorm outbreak accross parts of the state including the East Valley
East Mesa, Gilbert and parts of Chandler get up to 1 - 1/2 inches of rain
Here in the North Valley debris clouds bring a Whopping 0.02 Inches of rain.
Season total is now at 0.24 inches as the dry start to the Monsoon continues!!!

Jul 21st - So far the first 3 weeks of the Monsoon has been a dud in the North Valley.
5 storms that have brang a total of a mere 0.35 inches, leaving the year todate rainfall at 1.69 inches
which is right now the driest year on record in 16 years of data keeping thru July 21st!!!
This evening started with A Impresive dust storm but the rainfall was only 0.10 inches
Futher to north in New River they got up to 1 - 3/4 inches which is more than our yearly total!!!

July 31st - July 2012 closes 0.08 inches from a brief thunderstorm bringing the monthly total to 0.76 inches
Which is -0.46 inches below normal and makes this July the 7th Driest on record
The drought continues as 2012 is now the 2nd driest year on record thru July 31st!!
Only 1997 had less rain thru July 31st with 2.04 inches compared with 2.10 inches this year

Further to North the Anthem / New River area got hit hard again with street flooding and 1.5 inches of rain
This was a very isolated storm as the strange Monsoon Season continues with some areas receiving more rain
than normal and other areas very little... for an active season 2012 has been a big disappointment so far.

Aug 14th - The monsoon tries to return after 2 weeks relentless heat but was unimpressive again!!
Only 0.09 inches fell here in the North Valley the only thing it really did is prevented the daily Low of 90°F
This would have been only the 4th time the low was 90°F or higher the storm cooled to it to 83°F
The Monsoon Season total is only 0.86 inches less than 60% of normal so far and it stands as the 2nd driest on record.

Aug 21st - Finally Monsoon 2012 produces a storm that delivers meaningfull rain in the North Valley!!
Moderate rain has been falling from a thunderstorm complex over Phoenix for last 2 hours since 10pm
These storms brang heavier rain south of the valley of 1 inch + but so far Pepperidge has received 0.48 inches
Bringing the season total to 1.36 inches now the 3rd driest on record!!!

Aug 23rd - Very Early Morning severe thunderstorm brings a impressive light show and heavy rain and localized flooding.
Pepperridge received 0.52 inches from the storm that brang 1.5+ inches in localized valley locations.
Sky Harbor received daily rainfall record 0.80 incbes a impressive storm nearly valley wide.

Sept 9th - Another uneventful storm for the North Phoenix Valley with only 0.14 inches of rain from morning Thundershowers.
However East Mesa and Apache Junction got hit again with up to 2 1/2 inches of rain and street flooding.
Even Sky Harbor picked up 0.51 inches while Pepperridge finally manage to hit the 2 inch mark for the season.
2012 remains the 7th Driest Monsoon on Record with only 65% of normal precipitation for the Monsoon.

Sept 10th & 11th - The monsoon that has been hitting many areas harder this summer finally delivers
with a series of decent Thunderstorms over the last two days.

PepperRidge received 1.30 inches from the series of storms thanks to Low pressure system effective the state
The bulk of the rain that fell within a little 1hr between 10:40PM and 12midnight on Sept 10th with 0.81 inches
Additional morning showers on the 11th added another 0.22 inches which brings the Monsoon Season total to 3.39 inches
Which is slightly above the normal Monsoon Season total of 3.22 inches

September has been the wettest month of the season with 1.44 inches and the wettest Sept since Sept 2006
Sept 2006 holds the record for wettest Monsoon month with a the record breaking 5.24 inches!!


THE 2011 MONSOON SEASON HAS BEGAN AT PEPPERRIDGE!

The 2011 Monsoon Season Officially began as of 7/03/11
Today Jul 5th marked the third day in row with a average dewpoint
reading at 55.0°F or higher, this marks the begin of the season based on older
criteria of dewpoint*, by the newer set date system the season began on June 15th!!

Pepper Ridge Dewpoint averages over the last 6 days.
June 30th ---- 46.2°F July 3rd*---- 62.2°F
July 1st ---- 43.1°F July 4th ---- 65.9°F
July 2nd ---- 49.7°F July 5th ---- 67.1°F
The Monsoon has officially started at Phoenix Sky Harbor,on June 15th

July 3rd - First Measurable rain of Monsoon 2011 at Pepperridge fell on July 3rd
with 0.25 inches which ended a 83 day rainless streak at Pepperridge. (Apr 11th - July 2nd)
This tied with 2000 for the sixth longest rainless streak at this station.

July 5th - Major Dust Storm hit the Phoenix Area, reducing visibility to near zero
Only a little rain accompanied the storm with 0.13 inches. This that marked the 3rd day in row
with measurable rain at Pepperidge as 0.24 inches fell on the 4th of July with strong winds
The 3 Day total is 0.62 inches meaning this is best start to the season since 2008!!

July 11th - Overnight thundershowers and thunderstorms produce the largest rain event so far.
Moderate to heavy rain totaled 0.48 inches between 3am to 6am bringing July's rainfall to 1.10 inches.
With this storm more rain has fallen so far in Monsoon 2011 than during the entire 2009 Season!!
We are also closing in on 2010's Monsoon Season total of 1.63 inches,
meaning the best start to Monsoon Season since 2008 continues!!

July 24th - Active Evening with Thunderstorms across the valley with some areas receiving up to 1"+ rain
Here at Pepperridge the total rainfall was 0.53 inches with 0.06 inches of that after midnight on 7/25
This active storm with brillent Lightning display brings the season total to 1.63 inches which is a tie
with 2010s season total which means one more storm should make this the wetest Monsoon since 2008!!

July 30th - Brief Thunderstorms affected the valley this evening droping 0.29 inches of rain
at Pepperridge with this rain the Monsoon Season exceed last year's total for the entire season

July 31st - Thunderstorms affected the Valley for the second night in a row with a active evening with lightning
this storm dropped 0.44 inches between 9:30pm and 11:30pm at Pepperridge with periods of brief heavy rain.
With this storm July's rainfall total was 2.36 inches making it the 3rd wettest July on record at Pepperridge

Aug 3rd - A surprise thunderstorm poped up this evening bringing welcoming rain after a excessively hot day.
Tonight's strong storm delivered heavy rain with 0.50 inches between 8:30pm and 8:40pm!!
The temperature fell from 98°F to 77°F during the same period with winds gusting to 32mph!!
Total rainfall from this storm was 0.75 inches which brings the season total to 3.11 inches.

Aug 13th - Overnight Thundershowers brang some brief Heavy Rain totalling 0.24 inches!!
Bringing the August total to 0.99 inches and the season total 3.35 inches - 6th Wettest Overall.

Aug 18th - Another Dust storm "Haboob" rolled accross the valley this evening in it's wake
brief moderately heavy rain fell amounting to only 0.13 inches a disappointing dusty evening!!

Sept 30th - Monsoon 2011 ended with a disappointing final 6 weeks with only 0.09 inches of rain falling.
What started as a decent season fizzled with only 0.08 inches rain falling in September
The season ended with 3.57 inches rain making Monsoon 2011 the 6th wettest overall.



THE 2010 MONSOON SEASON HAS BEGAN AT PEPPERRIDGE!

The 2010 Monsoon Season Officially began as of 7/09/10
Today Jul 11th, marked the third day in row with a average dewpoint
reading at 55.0°F or higher, this marks the begin of the season based on older
criteria of dewpoint*, by the newer set date system the season began on June 15th!!

Pepper Ridge Dewpoint averages over the last 6 days.
July 6th ---- 45.8°F July 9th*---- 58.8°F
July 7th ---- 45.8°F July 10th ---- 61.4°F
July 8th ---- 52.3°F July 11th ---- 50.8°F
The Monsoon also officially started at Phoenix Sky Harbor,as of July 9th
The season began on June 15th based on the calendar date criteria!!!

THE 2010 MONSOON SEASON IS ALMOST HERE AT PEPPERRIDGE!

The 2010 Monsoon Season looks as if it could began on 7/11
Today Jul 10th, looks likely to mark the second day in a row with a average
dewpoint reading at 55.0°F or higher, this is based on the older
criteria by the newer set date system the season began on June 15th!!

Pepper Ridge Dewpoint averages over the last 6 days.
July 4th ---- 52.1°F July 7th ---- 45.8°F
July 5th ---- 46.0°F July 8th ---- 52.3°F
July 6th ---- 45.8°F July 9th ---- 58.8°F
The Monsoon has officially started at Phoenix Sky Harbor,on June 15th

July 22nd - First Measurable rain of Monsoon 2010 at Pepperridge fell on July 22nd
The mere 0.04 inches ended a 120 day rainless streak at Pepperridge. (Mar 24th - July 21st)
This is the second longest rainless streak at this station.

July 29th - First Major storm of Monsoon effects parts of the valley primary in Tempe,
Chandler , South and Central Phoenix, Glendale, Peoria and Sun City.
Winds even damaged a section of the roof at University of Phoenix Stadium.
Here at Pepperridge we received only a glancing blow from this storm.
While up to 1/2 inch to 1 inch of rain fell as close as about 5 miles West and NW of this station
Here results were very disappointing with 0.03 inches bringing the month only to a dismal 0.07 inches
With only 2 days left in the month this could be the driest July on record beating last years 0.13 inches

July 31st - Overnight Thundershowers bring a wet end to July with the first significant rainfall at Pepperridge
0.49 inches fell between 2:30am and 5:00am ending the month with 0.56 inches the 6th driest July on record
However afternoon showers left parts of south central Phoenix with up to 1 1/2 inches of rain this included
a daily record at Sky Harbor with 1.33 inches, so for parts of valley July ended fairly wet with up to 2 1/4 inches.
But at Pepperridge it has been a fairly dry month and Monsoon 2010 has been a NONSOON so far.

Aug 21st & 22nd - The 2nd Major storm of this Monsoon season again effected mainly the East Valley with
rainfall totals of up to 1.50 inches this storm ended up producing decent 0.41 inches here at Pepperridge
This storm moves Monsoon 2010 into 2nd place for the Driest Monsoon on record!!

Aug 24th - Another promising storm goes bust here at Pepperridge with brief heavy rain but only 0.08 inches total!
Futher north of our location they received up to 1/2 inch. However this storm produced some strong winds
These were the strongest so far of this Monsoon with substained winds of 29 mph & peak gust 40 mph at 4:32 pm!!

Aug 28th - A unusually strong front for late summer influences the season as westerlies begin to drive the moisture out.
However a brief Heavy thunderstorm effected the area with 0.19 inches of rain bringing the month to 0.86 inches.

Aug 31st - As August closes Monsoon 2010 remains one of the driest in 3rd place overall for driest Monsoon.
The August rainfall was 0.86 inches which was (0.42 inches) below the normal 1.28 inches.
The month closed out dry as westeries again disrupted the monsoon because of the lingering effects of El Nino.

Sept 30th - Monsoon 2010 closes with little fanfare it was the 3rd driest on record thanks to a dry
September which produced only 0.21 inches with 0.20 inches falling on Sept 22nd from the remanents of
Tropical Storm Georgette. Otherwise the Monsoon was almost non existant in September.


THE 2009 MONSOON SEASON HAS BEGAN AT PEPPERRIDGE!

The 2009 Monsoon Season has officially began at Pepper Ridge North Valley on 6/29
Today Jul 1st, marks the third day in a row with a average
dewpoint reading at 55.0°F or higher, this is based on the older
criteria by the newer set date system the season began on June 15th!!

Pepper Ridge Dewpoint averages over the last 6 days.
June 26th ---- 55.1°F June 29th*---- 58.4°F
June 27th ---- 54.5°F June 30th ---- 61.3°F
June 28th ---- 54.9°F July 1st ---- 60.9°F
The Monsoon has officially started at Phoenix Sky Harbor,on June 15th

Aug 13th - Finally a storm as "NONsoon 2009" continues. A decent early morning storm
produces 0.32 inches of badly need rain as the dismal 2009 season continues
Unfortunately more unusually dry weather is forecast thru next week

Aug 31st - NONsoon 2009" breathes a little new life at month's end
A evening thunderstorm produces 0.20 inches of badly need rain as the dismal 2009 season continues

Sept 23rd - With only 7 days left in the season it looks like this will be the
Driest Monsoon on record with only 0.69 inches, it has been a disappointing Summer!

Oct 1st - It's Official Monsoon 2009 is officially over and it was the
Driest Monsoon on record with only 0.69 inches the prior driest Monsoon was 2001 with 1.28 inches


THE 2008 MONSOON SEASON HAS BEGAN AT PEPPERRIDGE!

The 2008 Monsoon Has Began at Pepper Ridge North Valley!!!
Based on the dewpoint criteria which has to have average 55°F or above for 3 days in a row
This criteria was met on July 5th which means the Monsoon began on July 3rd
HOWEVER based on the new Method of preset dates the Monsoon began on June 15th!!

Yesterday July 5th, marked the third day in a row with a Dewpoint average at 55.0°F or above,
which means based on criteria for dewpoint averages*
the Monsoon began three days ago on July 3rd. Last years season began on July 8th.

Pepper Ridge Dewpoint averages over the last 6 days.
June 30th ---- 53.4°F July 3rd* ---- 58.0°F
July 1st ---- 53.5°F July 4th ---- 60.9°F
July 2nd ---- 53.3°F July 5th ---- 59.9°F
The Monsoon has officially started at Phoenix Sky Harbor,on June 15th

July 11th - 1st Decent Storm of Monsoon 2008 produces 1.07 inches
On July 11th and 12th with a peak Wind Gust of 25 Mph at 8pm on July 11th.

Aug 7th - 2nd Decent Storm of Monsoon 2008 produces 0.85 inches
On Aug 7th with a peak Wind Gust of 37 Mph at 9pm.

Aug 25th - 3rd Decent Storm of Monsoon 2008 produces 0.99 inches
On Aug 25th with a peak Wind Gust of 26 Mph at 7:55pm.

Aug 28th - 4th Decent Storm of Monsoon 2008 produces 0.21 inches and a peak Wind Gust of 37 Mph at 9pm.

The Brunt of the storm hit S.E. of this location in Tempe/Mesa and Central Phoenix.
A 75 Mph Gust was recorded at Sky Harbor Severe ThunderStorm details.

Daily lightning totals were alltime records with 94,333 lightning Flashes or Strikes,
including 553 nearby strokes The total stroke count from those flashes was 231,460 strokes

The storm lasted into the Early hours of 8/29
and produced an additional 0.17 inches and Pea Size Hail Shortly after midnight


The complete summary of the 2007 Monsoon Season can be found at
the following link: 2007 Monsoon Summary Page


Monsoon Rainfall for Pepper Ridge # 1 North Valley Phoenix - 1997 - 2008

YEAR 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 MAX MNTH MIN MNTH MNTLY AVG
JUN 0.00 0.00 0.07* 0.96 0.01 0.00 0.00 0.00 0.02 0.05* 0.00 0.00 0.96 0.00 0.11*
JUL 0.34 0.95 4.03 0.13 0.33 1.92 0.44 0.47 2.62 1.12 1.63 1.32 4.03 0.13 1.25
AUG 1.33 0.48 1.30 2.65 0.94 0.08 1.84 0.91 2.15 1.89 0.07 2.85 2.85 0.07 1.30
SEP 0.27 0.60 0.77 0.01 0.00 1.14 0.29 0.85 0.32 5.24 0.02 0.02 5.24 0.00 0.47
Min Month 0.00 0.00 0.07 0.01 0.01 0.00 0.00 0.00 0.02 0.05 0.00 0.00 0.96 0.00 1.28 season
Max Month 1.33 0.95 4.03 2.65 0.94 1.92 1.84 0.91 2.62 5.24 1.63 2.85 5.24 0.13 8.25 season
Avg/Totals 1.94 2.03 6.10 3.75 1.28 3.14 2.57 2.23 5.11 8.25 1.72 4.19 ---- ---- 3.13

Monsoon Normals listed above are based on the years 1997- 2005

*0.07 in 1999 & 0.05 in 2006 Fell Before Jun 15 and is not included in Monsoon Totals
Monsoon Rainfall is statistically measured from June 15th thru Sept 30th!!

Monsoon Rainfall for Pepper Ridge # 1 North Valley Phoenix - 2009 - 2017

YEAR 2009 2010 2011 2012 2013 2014 2015 2016 2017 MAX MNTH MIN MNTH MNTLY AVG
JUN 0.00 0.00 0.00 0.00 0.00 0.00 0.14* 0.16* 0.00 0.96 0.00 0.07*
JUL 0.13 0.56 2.36 0.76 0.87 1.03 0.22 0.05 2.01 4.03 0.05 1.06
AUG 0.54 0.86 1.13 1.19 0.20 4.33 0.18 2.55 0.96 4.33 0.07 1.37
SEP 0.02 0.21 0.08 1.47 2.22 3.82 0.61 0.59 T 5.24 0.00 0.93
Min Month 0.00 0.00 0.00 0.00 0.00 0.00 0.14 0.05 0.00 0.96 0.02 0.69 season
Max Month 0.54 0.86 2.36 1.47 2.22 4.33 0.61 2.55 2.01 5.24 0.13 9.18 season
Avg/Totals 0.69 1.63 3.57 3.42 3.29 9.18 1.15 3.35 2.97 ---- ---- 3.43

Monsoon Normals are based on the years 1997- 2016

*0.07 in 1999 , 0.05 in 2006, 0.37 2015 & 0.05 2016 Fell Before Jun 15 and is not included in Monsoon Totals
Monsoon Rainfall is statistically measured from June 15th thru Sept 30th!!



TOP 5 - WETEST MONSOONS:
RANK: YEAR: PRECIP:
===== ===== =====
1. 2014 9.18
2. 2006 8.25
3. 1999 6.10
4. 2005 5.11
5. 2008 4.19
6. 2000 3.75
7. 2011 3.57
8. 2012 3.42
9. 2016 3.35
10. 2013 3.29


TOP 5 - DRIEST MONSOONS:
RANK: YEAR: PRECIP:
===== ===== =====
1. 2009 0.69
2. 2015 1.15
3. 2001 1.28
4. 2010 1.63
5. 2007 1.72
6. 1997 1.94
7. 1998 2.03
8. 2004 2.23
9. 2003 2.57
10. 2017 2.97*

*Todate as of 09/30/17




2006 Monsoon Summary ·  2005 Monsoon Summary


Page last updated on October 7th, 2017


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 Pepper Ridge North Valley Random Weather Facts

RAINFALL
Terms such as "slight chance" of rain (10-20%), "chance" of rain (30-50%) or rain "likely" (60-70%) are used when there is uncertainty of receiving measurable precipitation anywhere in the forecast area (such as the Greater Phoenix Area). For instance, if there is only a 30-50 percent chance that rain will fall anywhere in the Phoenix Metro area, then the forecast will call for a "chance" of rain.

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