San Tan Valley · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
San Tan Valley & neighbors — hit play
Every city on the map carries real forecast data from the same models as its city page, refreshed several times a day. The icon is the day's overall look; the number is the afternoon high.
Next 14 days at a glance
from the model forecast
Hottest day
107°
Sun, Aug 30
Coldest night
73°
Thu, Sep 10
Days with precip
10 / 14
of 14 forecast days
Nicest day
Sat, Sep 12
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
92° 75°
57% precip chance
Sat 12 – Sun 13 Sep
90° 75°
typical range
Sat 19 – Sun 20 Sep
88° 72°
typical range
Sat 26 – Sun 27 Sep
89° 71°
typical range
30 days — San Tan Valley
14 forecast + 16 climatology
Sun · Today Sunny
107°76°12.6 mm⌄
Wind26 mph W
Gusts35 mph
UV index10 – Very high
Precip chance62%
Sunrise05:59
Sunset18:54
Mon · Tomorrow Sunny
94°76°4.8 mm⌄
Wind19 mph W
Gusts26 mph
UV index10 – Very high
Precip chance57%
Sunrise05:59
Sunset18:52
Tuesday 1/9 Sunny
94°77°0.2 mm⌄
Wind8 mph E
Gusts16 mph
UV index10 – Very high
Precip chance17%
Sunrise06:00
Sunset18:51
Wednesday 2/9 Sunny
96°83°1%⌄
Wind9 mph SW
Gusts20 mph
UV index10 – Very high
Precip chance1%
Sunrise06:01
Sunset18:50
Thursday 3/9 Sunny
97°82°1.9 mm⌄
Wind20 mph NW
Gusts28 mph
UV index10 – Very high
Precip chance57%
Sunrise06:01
Sunset18:48
Friday 4/9 Showers
89°77°13.6 mm⌄
Wind8 mph SE
Gusts14 mph
UV index7 – High
Precip chance71%
Sunrise06:02
Sunset18:47
Saturday 5/9 Showers
85°75°2.5 mm⌄
Wind10 mph NW
Gusts16 mph
UV index7 – High
Precip chance57%
Sunrise06:03
Sunset18:46
Sunday 6/9 Sunny
92°77°3.2 mm⌄
Wind18 mph SW
Gusts25 mph
UV index8 – Very high
Precip chance57%
Sunrise06:03
Sunset18:44
Monday 7/9 Sunny
91°76°1.7 mm⌄
Wind10 mph W
Gusts21 mph
UV index8 – Very high
Precip chance57%
Sunrise06:04
Sunset18:43
Tuesday 8/9 Sunny
97°78°0.3 mm⌄
Wind16 mph S
Gusts22 mph
UV index9 – Very high
Precip chance36%
Sunrise06:05
Sunset18:42
Wednesday 9/9 Showers
90°75°4.8 mm⌄
Wind16 mph SW
Gusts24 mph
UV index8 – Very high
Precip chance63%
Sunrise06:05
Sunset18:40
Thursday 10/9 Mostly cloudy
84°73°4.8 mm⌄
Wind6 mph SE
Gusts8 mph
UV index7 – High
Precip chance70%
Sunrise06:06
Sunset18:39
Friday 11/9 Sunny
91°75°11.3 mm⌄
Wind8 mph SW
Gusts11 mph
UV index8 – Very high
Precip chance64%
Sunrise06:07
Sunset18:38
Saturday 12/9 Sunny
89°80°4%⌄
Wind11 mph SW
Gusts21 mph
UV index8 – Very high
Precip chance4%
Sunrise06:07
Sunset18:36
Sunday 13/9 Rain (climatological)
90°75°16.1 mm⌄
Day≈85–96°
Night≈69–80°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
91°75°20%⌄
Day≈85–96°
Night≈70–80°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
94°77°20%⌄
Day≈88–99°
Night≈71–82°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
91°75°17.0 mm⌄
Day≈85–96°
Night≈70–80°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
86°72°20%⌄
Day≈81–91°
Night≈67–78°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
81°69°20%⌄
Day≈76–86°
Night≈64–74°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
86°72°10.7 mm⌄
Day≈81–92°
Night≈67–78°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
88°73°20%⌄
Day≈83–93°
Night≈68–79°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
93°76°20%⌄
Day≈87–98°
Night≈71–82°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
91°75°7.6 mm⌄
Day≈85–96°
Night≈70–80°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
92°76°20%⌄
Day≈87–98°
Night≈71–81°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
85°71°20%⌄
Day≈80–90°
Night≈66–77°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
84°71°11.2 mm⌄
Day≈79–90°
Night≈66–76°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
85°71°20%⌄
Day≈79–90°
Night≈66–77°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
89°74°20%⌄
Day≈83–94°
Night≈68–79°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Rain (climatological)
91°75°12.5 mm⌄
Day≈86–96°
Night≈70–81°
Precip≈5.3 in / September
(climatological)Typical range for these dates · 1991–2020
How does a 30-day outlook work?
The first 14 days are a live model forecast. The back half of the month shows the typical range for those dates — useful for planning, not a literal prediction.
First 14 days: a real forecast, blended from NBM, ECMWF and GFS runs. Trust it most inside three days; by the second week treat it as a lean, not a promise.
Rest of the month: past day 14 we stop pretending to forecast and switch to the climate corridor — the range those dates have produced over three decades computed directly for San Tan Valley, with mild week-to-week wiggle.
Good question for this page: "Is late August usually humid in Chicago?" Bad question: "Do I need an umbrella on the 29th?" — three weeks out no one knows, and that's the honest answer.