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Comfort Index: Danger Heat
 Updated24-Aug-2019 1:50pm @ 
 
Time of Next Full Update: 1:55 pm -  Station Elev: 1469 ft  
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PEPPERRIDGE NORTH VALLEY'S
7 DAY DETAIL FORECAST FOR NORTH PHOENIX, AZ.


National Weather Service Forecast for: 8 Miles NNE Phoenix AZ
Issued by: National Weather Service Phoenix, AZ
Updated: 9:06 am MST Aug 24, 2019

North Phoenix Arizona
 
This
Afternoon
This Afternoon: Sunny, with a high near 101. West wind around 10 mph.
Sunny
Tonight

Tonight: Mostly clear, with a low around 80. West southwest wind 5 to 10 mph.
Mostly Clear
Sunday

Sunday: Sunny, with a high near 103. West southwest wind 5 to 10 mph.
Sunny
Sunday
Night
Sunday Night: Mostly clear, with a low around 81. West southwest wind 5 to 10 mph.
Mostly Clear
Monday

Monday: Sunny, with a high near 106. Light west southwest wind increasing to 5 to 10 mph in the morning.
Sunny
Monday
Night
Monday Night: Mostly clear, with a low around 82. West wind 5 to 10 mph becoming light west northwest  after midnight.
Mostly Clear
Tuesday

Tuesday: Sunny, with a high near 109. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Sunny
Tuesday
Night
Tuesday Night: Mostly clear, with a low around 83. West wind 5 to 10 mph becoming light and variable  after midnight.
Mostly Clear
Wednesday

Wednesday: Sunny, with a high near 107. Light and variable wind becoming west southwest 5 to 10 mph in the morning.
Sunny

Hi 101 °F

Lo 80 °F

Hi 103 °F

Lo 81 °F

Hi 106 °F

Lo 82 °F

Hi 109 °F

Lo 83 °F

Hi 107 °F


 

This Afternoon
 
Sunny, with a high near 101. West wind around 10 mph.
Tonight
 
Mostly clear, with a low around 80. West southwest wind 5 to 10 mph.
Sunday
 
Sunny, with a high near 103. West southwest wind 5 to 10 mph.
Sunday Night
 
Mostly clear, with a low around 81. West southwest wind 5 to 10 mph.
Monday
 
Sunny, with a high near 106. Light west southwest wind increasing to 5 to 10 mph in the morning.
Monday Night
 
Mostly clear, with a low around 82. West wind 5 to 10 mph becoming light west northwest after midnight.
Tuesday
 
Sunny, with a high near 109. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Tuesday Night
 
Mostly clear, with a low around 83. West wind 5 to 10 mph becoming light and variable after midnight.
Wednesday
 
Sunny, with a high near 107. Light and variable wind becoming west southwest 5 to 10 mph in the morning.
Wednesday Night
 
Mostly clear, with a low around 81. West southwest wind 5 to 10 mph becoming light southwest after midnight.
Thursday
 
Sunny, with a high near 104. Calm wind becoming west southwest around 5 mph in the morning.
Thursday Night
 
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80. West southwest wind around 5 mph becoming calm in the evening.
Friday
 
Mostly sunny, with a high near 104. Calm wind becoming west southwest around 5 mph in the afternoon.

 

Forecast from NOAA-NWS for 8 Miles NNE Phoenix AZ.




Phoenix, Az - Area Forecast Discussion

Forecast Discussion for PSR NWS Office
000
FXUS65 KPSR 241814
AFDPSR

Area Forecast Discussion
National Weather Service Phoenix AZ
1114 AM MST Sat Aug 24 2019

.UPDATE...
Updated Aviation section.

&&

.SYNOPSIS...
Although temperatures will be cooler the next couple days,
humidity levels will be significantly elevated. Slight chances
for showers and thunderstorms today will only exist well south of
Phoenix. Drier air will move into the region through the first
half of next week, basically ending storm chances. Temperatures
will start climbing again early next week with Tuesday and
Wednesday possibly topping 110 degrees across the lower deserts.

&&

.DISCUSSION...
Morning WV imagery shows a series of fast moving northern stream
waves punching into the Great Basin while a flat midtropospheric
ridge splays across the foreast area. Further south, an easterly
wave (likely convectively enhanced) was situated over western Sonora
placing much of south-central Arizona within a region of deformation
and weak ascent. After another robust Gulf surge last night and mid
60 to mid 70s surface dewpoints this morning, 12Z sounding data
sampled very healthy sfc-H8 mixing ratios of 14-16 g/kg. However,
sounding data also depicts quite a H8-H7 inhibition layer; and
lacking a more substantial gravity waves or other impetus for
stronger lift, only shallow cloud decks around the H8 level have
been observed this morning. Had there been some better ascent
mechanisms and/or erosion of this capping layer, instability on the
order of 1500-2000 J/kg could have easily been released (something
CAMs seemed to pick up on yesterday). Given this scenario, have
increased cloud cover through the morning hours while trending many
other parameters towards recent observational data.

&&

.PREVIOUS DISCUSSION...
/529 AM MST Sat Aug 24 2019/
The rest of the today will still pose a small threat for isolated
afternoon showers and thunderstorms south of Phoenix, but the
drying aloft will also be mixing out some of the lower level
moisture, gradually decreasing instability by this evening. Sunday
looks even more quiet with virtually no chance of storms other
than south of Tucson. Temperatures this weekend will be somewhat
more comfortable and right around seasonal normals, but increased
surface dew points will make higher humidity levels more
noticeable.

The high pressure ridge centered to our northwest on Sunday will
gradually shift southeastward over our region early this week
with heights staying near steady-state, but low level
conditions will be warming as the atmosphere dries out more each
day. The warm air aloft and fairly dry conditions will keep storm
chances near zero on Monday and Tuesday. Models continue to show
high temperatures quickly trending upward early next week with
highs 3-5 degrees above normal on Monday and 6-8 degrees above
normal by Tuesday. The possibility for a marginal excessive heat
episode is becoming a bit more likely for Tuesday and Wednesday
for the warmest deserts with median guidance showing highs topping
out 109-112 on Tuesday, but will hold off on any headlines for
now.

Eventually, models mostly show the high center shifting just to
our northeast, likely setting up a more favorable southeasterly
moist flow. This should bring back storm chances as early as
Wednesday across the eastern Arizona high terrain and possibly
over the Arizona lower deserts at some point late next week.
Heights aloft later next week still look to be toward the upper
end of climo normals, but the likely increase in low level
moisture should lower temperatures to just a bit above normal.

&&

.AVIATION...Updated at 1815 UTC.

South-Central Arizona including KPHX, KIWA, KSDL, and KDVT:

Humid air in the lower levels has been streaming in from the Gulf
of California. It has been moist enough to generate cumulus at
unusually low altitudes for this time of year with bases at
FL050-070. The cumulus has been scattered for the most part and
is expected to remain that way. But, in localized areas (especially
near mountains) expect broken conditions into the early afternoon.
Anticipate coverage to decrease after 20Z. Otherwise, anticipate a
slow increase in the height of the cloud bases. Winds at the
surface and lower levels will favor westerly directions the rest
of the day and overnight. Expect speeds to be strongest late this
afternoon and evening with gusts in the 15-25 kt range. There is
an outside possibility of another round of cumulus/stratocumulus
Sunday morning but confidence too low to depict ceilings in the
TAFs. As for storms, expect activity to remain outside of metro
Phoenix with the main area over far southeast AZ.


Southeast California/Southwest Arizona including KIPL and KBLH:

Humid air in the lower levels has been streaming in from the Gulf
of California. It has been moist enough to generate cumulus at
unusually low altitudes for this time of year with bases at
FL035-055. The cumulus has been broken over many areas near and
west of the Lower Colorado River Valley. Anticipate coverage to
decrease after 20Z. Otherwise, anticipate a slow increase in the
height of the cloud bases. Winds at the surface and lower levels
will favor southerly directions the rest of the day and overnight.
Expect speeds to be strongest late this afternoon and evening
with gusts in the 15-25 kt range.


Aviation Discussion not updated for amended TAFs.

&&

.FIRE WEATHER...
Monday through Friday:
Unusually dry conditions for late August will prevail through the
first half of next week with only slight chances of high terrain
thunderstorms later in the week. With this dry airmass, temperatures
will once again warm near excessive levels as afternoon highs peak
some 5F-10F above average. Afternoon humidity levels will fall into
the teens during the early part of the week, but increase closer to
a 20-30% range late in the week. Occasionally gusty upslope terrain
winds are likely through the week, though nothing too unusual for
the season.

&&

.SPOTTER INFORMATION STATEMENT...
Spotters should follow standard reporting procedures.

&&

.PSR WATCHES/WARNINGS/ADVISORIES...
AZ...None.
CA...None.
&&

$$

DISCUSSION...MO/Kuhlman
AVIATION...AJ
FIRE WEATHER...MO

NWS PSR Office Area Forecast Discussion






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 Pepper Ridge North Valley Random Weather Facts

WEATHER NORMALS
What does it really mean when you here the term Normal. Actually a more approriate term is average temp. The National Weather Service currently uses the standard of a 30 year average to determine the "Normal Temperatures and Rainfall". for any given date. This average is adjusted to form a mean curve over any given month, this way the day to day change does not have large variations. Currently N.O.A.A. is using the period of (1970 - 2000) to determine normals.

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