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Casa Grande, Arizona 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Casa Grande AZ
National Weather Service Forecast for: Casa Grande AZ
Issued by: National Weather Service Phoenix, AZ
Updated: 4:24 am MST Jul 7, 2025
 
Today

Today: Sunny, with a high near 106. South southeast wind 5 to 10 mph becoming west in the afternoon.
Sunny

Tonight

Tonight: Mostly clear, with a low around 82. West northwest wind 5 to 10 mph becoming southeast after midnight.
Mostly Clear

Tuesday

Tuesday: Sunny, with a high near 107. South southwest wind 5 to 10 mph becoming west northwest in the morning.
Sunny

Tuesday
Night
Tuesday Night: Mostly clear, with a low around 83. West northwest wind 5 to 10 mph becoming south southwest after midnight.
Mostly Clear

Wednesday

Wednesday: Sunny and hot, with a high near 111. South southwest wind 5 to 10 mph becoming west northwest in the afternoon.
Hot

Wednesday
Night
Wednesday Night: Mostly clear, with a low around 84. West northwest wind 5 to 10 mph becoming south southwest after midnight.
Mostly Clear

Thursday

Thursday: Sunny, with a high near 108. Breezy, with a south southwest wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.
Sunny then
Sunny and
Breezy
Thursday
Night
Thursday Night: Mostly clear, with a low around 82. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Mostly Clear

Friday

Friday: Sunny, with a high near 106. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunny

Hi 106 °F Lo 82 °F Hi 107 °F Lo 83 °F Hi 111 °F Lo 84 °F Hi 108 °F Lo 82 °F Hi 106 °F

Extreme Heat Warning
 

Today
 
Sunny, with a high near 106. South southeast wind 5 to 10 mph becoming west in the afternoon.
Tonight
 
Mostly clear, with a low around 82. West northwest wind 5 to 10 mph becoming southeast after midnight.
Tuesday
 
Sunny, with a high near 107. South southwest wind 5 to 10 mph becoming west northwest in the morning.
Tuesday Night
 
Mostly clear, with a low around 83. West northwest wind 5 to 10 mph becoming south southwest after midnight.
Wednesday
 
Sunny and hot, with a high near 111. South southwest wind 5 to 10 mph becoming west northwest in the afternoon.
Wednesday Night
 
Mostly clear, with a low around 84. West northwest wind 5 to 10 mph becoming south southwest after midnight.
Thursday
 
Sunny, with a high near 108. Breezy, with a south southwest wind 10 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
 
Mostly clear, with a low around 82. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
 
Sunny, with a high near 106. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
 
Mostly clear, with a low around 80. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
 
Sunny, with a high near 105. South southwest wind 5 to 10 mph becoming west northwest in the afternoon.
Saturday Night
 
Mostly clear, with a low around 80. West wind 5 to 10 mph becoming south after midnight.
Sunday
 
Sunny, with a high near 106. South wind 5 to 10 mph becoming west northwest in the afternoon.

 

Forecast from NOAA-NWS for Casa Grande AZ.

Weather Forecast Discussion
415
FXUS65 KPSR 071140
AFDPSR

Area Forecast Discussion
National Weather Service Phoenix AZ
440 AM MST Mon Jul 7 2025

.UPDATE...Updated 12z Aviation Discussion.

&&

.KEY MESSAGES...

-Generally dry conditions and hotter temperatures are expected
 this week with highs potentially exceeding 115 degrees across
 many of the lower desert communities by Wednesday

-The hotter temperatures will result in widespread Major HeatRisk with
 Extreme Heat Warnings in effect for much of the region between
 Tuesday through Thursday

-Slightly cooler temperatures expected by the end of the week
 through next weekend but still remaining above normal

&&

.SHORT TERM /TODAY THROUGH TUESDAY/...
Latest objective analysis depicts the subtropical high near the
International Border with a cutoff low centered just off the central
CA coast. The cutoff low will continue to limit the westward
migration of the subtropical high for today and as a result high
temperatures this afternoon are likely to be rather similar to
what they were yesterday as readings will top out near 110 degrees
on average across the lower deserts. By Tuesday, the cutoff low
is projected to weaken allowing the subtropical high to migrate
westward and become stationed on top of Arizona and strengthen in
the process as 500 mb height fields increase to 596-598dm. This
will translate to hotter temperatures with afternoon highs across
the lower deserts ranging between 109-113 degrees with the hottest
temperatures across the lower deserts of south-central AZ,
including the Phoenix Metro. As a result, areas of Major HeatRisk
show up across the majority of the south-central AZ lower deserts
with Extreme Heat Warnings in effect. Any storm activity through
Tuesday will be limited to portions of the High Country as well as
portions of southeast AZ as meager moisture profiles and
increasing subsidence from the strengthening high will hinder any
potential for more widespread convection.

&&

.LONG TERM /WEDNESDAY THROUGH SUNDAY/...
Wednesday is expected to be peak of the extreme heat episode as
the subtropical high becomes more expansive across the Desert
Southwest and strengthens slightly. This will translate to
widespread high temperatures of 115+ degrees across the lower
deserts with the latest NBM showing a greater than 80% of
occurrence. Temperatures of this magnitude will result in
widespread Major HeatRisk across the majority of the region with
Extreme Heat Warnings in effect across virtually the entire CWA
with exception of the elevations above 4000 feet east of Phoenix
where Heat Advisories are effect. Both Phoenix and El Centro have
a 70% chance of at least tying a daily record high.

The subtropical high is expected to weaken slightly heading into
Thursday as what is leftover from the aforementioned cutoff low
moves eastward through the Great Basin and Intermountain West
Regions, resulting in a suppression of the high. Temperatures are
expected to cooldown slightly but still hot enough for areas of
Major HeatRisk to remain in place with Extreme Heat Warnings
in effect for all of the lower deserts. Heading into the end of
the week and next weekend, the high will continue to slowly
migrate westward towards the southern CA coastline and as a
result heights aloft will continue to decrease slightly. This will
translate to slightly cooler temperatures, enough to drop
readings below extreme heat thresholds but still remaining above
normal as afternoon highs will hover around 110 degrees across the
lower deserts.

With the subtropical high stationed over the region and the flow
pattern not favorable for deeper moisture advection into the region,
conditions are expected to remain mostly dry for the next several
days across the majority of the region with any storm potential
to be confined across the White Mountains through the southeastern
third of AZ. In fact, virtually all of the EPS and GEFS ensemble
members do not indicate any measurable rain potential for the
lower deserts until at the earliest the middle of next week when
potentially the subtropical high migrates into the Four Corners
Region, resulting in a more favorable flow pattern for deeper
moisture advection and thus more widespread storm chances.

&&

.AVIATION...Updated at 1140Z.

South Central Arizona including KPHX, KIWA, KSDL, KDVT:
No major weather issues will exist through Tuesday morning under
mid/high cloud decks that will be primarily relegated to the
mountains east of the terminals by the afternoon. Winds will
generally follow diurnal patterns, with current light east winds
switching west by late morning. Confidence is moderate to good
that the typical nocturnal switch to east winds will not take
place at KPHX tonight.

Southeast California/Southwest Arizona including KIPL and KBLH:
No major weather issues will exist through the next 24 hours under
clear skies. Winds will mostly favor SE to S at both terminals,
with a relatively short period of SW winds during the evening and
slightly stronger speeds (10-15 kts sustained) anticipated at KBLH
this afternoon compared to yesterday.

&&

.FIRE WEATHER...
Above normal temperatures will persist throughout the week as
lower deserts highs exceed 110 degrees. MinRH values will
generally be in the low to mid teens with MaxRH values ranging
between 25-45% for most of the area, with the exception across
Imperial and southern Yuma Counties where periodic gulf surges
will result in MaxRH values to exceed 50%. The overall wind
pattern will follow the familiar diurnal trends, with some
afternoon/early evening breeziness. Very minimal rain chances will
exist throughout the week with CWR <10% through at least next
weekend.

&&

.PSR WATCHES/WARNINGS/ADVISORIES...
AZ...Extreme Heat Warning from 10 AM Wednesday to 8 PM MST Thursday
     for AZZ530>533-535-536.

     Extreme Heat Warning from 10 AM Tuesday to 8 PM MST Thursday for
     AZZ534-537>540-542>544-546-548-550-551-553>555-559-560.

     Heat Advisory from 10 AM to 8 PM MST Wednesday for AZZ557-558-
     563.

     Extreme Heat Warning from 10 AM to 8 PM MST Wednesday for AZZ541-
     545-547-549-552-556-561-562.

CA...Extreme Heat Warning from 10 AM Wednesday to 8 PM PDT Thursday
     for CAZ560>570.

&&

$$

SHORT TERM...Lojero
LONG TERM...Lojero
AVIATION...Whittock
FIRE WEATHER...Lojero
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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