Green Valley · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Green 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
111°
Sun, Aug 23
Coldest night
69°
Mon, Aug 24
Days with precip
6 / 14
of 14 forecast days
Nicest day
Fri, Sep 4
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
100° 76°
36% precip chance
Sat 5 – Sun 6 Sep
93° 71°
typical range
Sat 12 – Sun 13 Sep
93° 70°
typical range
Sat 19 – Sun 20 Sep
90° 69°
typical range
30 days — Green Valley
14 forecast + 16 climatology
Sun · Today Showers
111°77°2.1 mm⌄
Wind15 mph SW
Gusts22 mph
UV index11 – Very high
Precip chance57%
Sunrise05:53
Sunset18:59
Mon · Tomorrow Mostly cloudy
94°69°11.1 mm⌄
Wind20 mph SW
Gusts25 mph
UV index9 – Very high
Precip chance74%
Sunrise05:54
Sunset18:58
Tuesday 25/8 Sunny
98°74°4%⌄
Wind12 mph SW
Gusts21 mph
UV index11 – Very high
Precip chance4%
Sunrise05:55
Sunset18:56
Wednesday 26/8 Sunny
99°78°3%⌄
Wind21 mph NE
Gusts32 mph
UV index11 – Extreme
Precip chance3%
Sunrise05:55
Sunset18:55
Thursday 27/8 Sunny
98°78°17%⌄
Wind13 mph N
Gusts22 mph
UV index9 – Very high
Precip chance17%
Sunrise05:56
Sunset18:54
Friday 28/8 Mostly cloudy
101°77°1.4 mm⌄
Wind25 mph S
Gusts30 mph
UV index9 – Very high
Precip chance57%
Sunrise05:57
Sunset18:53
Saturday 29/8 Sunny
100°78°0.5 mm⌄
Wind11 mph S
Gusts17 mph
UV index9 – Very high
Precip chance36%
Sunrise05:57
Sunset18:52
Sunday 30/8 Sunny
99°76°2%⌄
Wind15 mph S
Gusts21 mph
UV index9 – Very high
Precip chance2%
Sunrise05:58
Sunset18:50
Monday 31/8 Sunny
97°76°0.3 mm⌄
Wind10 mph N
Gusts21 mph
UV index9 – Very high
Precip chance17%
Sunrise05:58
Sunset18:49
Tuesday 1/9 Mostly cloudy
94°72°12.0 mm⌄
Wind11 mph W
Gusts19 mph
UV index7 – High
Precip chance75%
Sunrise05:59
Sunset18:48
Wednesday 2/9 Thunderstorms
91°72°9.1 mm⌄
Wind11 mph N
Gusts19 mph
UV index7 – High
Precip chance74%
Sunrise06:00
Sunset18:47
Thursday 3/9 Mostly cloudy
90°74°1.5 mm⌄
Wind7 mph N
Gusts19 mph
UV index8 – Very high
Precip chance57%
Sunrise06:00
Sunset18:45
Friday 4/9 Sunny
94°71°4%⌄
Wind11 mph S
Gusts20 mph
UV index8 – Very high
Precip chance4%
Sunrise06:01
Sunset18:44
Saturday 5/9 Sunny
93°72°0.2 mm⌄
Wind9 mph N
Gusts18 mph
UV index8 – Very high
Precip chance17%
Sunrise06:01
Sunset18:43
Sunday 6/9 Rain (climatological)
92°71°5.0 mm⌄
Day≈86–97°
Night≈65–76°
Precip≈3.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
96°73°20%⌄
Day≈90–101°
Night≈68–78°
Precip≈3.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
96°73°20%⌄
Day≈91–101°
Night≈68–79°
Precip≈3.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Rain (climatological)
96°73°5.8 mm⌄
Day≈91–101°
Night≈68–79°
Precip≈3.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
92°71°20%⌄
Day≈87–97°
Night≈65–76°
Precip≈3.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
87°68°20%⌄
Day≈82–92°
Night≈62–73°
Precip≈3.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Rain (climatological)
91°70°9.1 mm⌄
Day≈86–96°
Night≈65–76°
Precip≈3.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
93°72°20%⌄
Day≈88–99°
Night≈66–77°
Precip≈3.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
95°73°20%⌄
Day≈90–100°
Night≈67–78°
Precip≈3.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
96°74°9.1 mm⌄
Day≈91–102°
Night≈68–79°
Precip≈3.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
92°71°20%⌄
Day≈87–97°
Night≈65–76°
Precip≈3.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
89°69°20%⌄
Day≈84–94°
Night≈64–74°
Precip≈3.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
89°69°11.1 mm⌄
Day≈84–95°
Night≈64–74°
Precip≈3.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
89°69°20%⌄
Day≈83–94°
Night≈63–74°
Precip≈3.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
90°70°20%⌄
Day≈85–95°
Night≈64–75°
Precip≈3.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Rain (climatological)
94°72°6.9 mm⌄
Day≈88–99°
Night≈66–77°
Precip≈3.3 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 Green 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.