Spring Valley · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Spring 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
106°
Sun, Aug 30
Coldest night
77°
Thu, Aug 20
Days with precip
2 / 14
of 14 forecast days
Nicest day
Wed, Sep 2
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
104° 81°
17% precip chance
Sat 29 – Sun 30 Aug
106° 80°
3% precip chance
Sat 5 – Sun 6 Sep
102° 77°
typical range
Sat 12 – Sun 13 Sep
103° 79°
typical range
30 days — Spring Valley
14 forecast + 16 climatology
Thu · Today Sunny
104°77°8.2 mm⌄
Wind16 mph SE
Gusts27 mph
UV index10 – Very high
Precip chance69%
Sunrise06:52
Sunset19:58
Fri · Tomorrow Thunderstorms
104°79°6.1 mm⌄
Wind14 mph SE
Gusts25 mph
UV index10 – Very high
Precip chance68%
Sunrise06:53
Sunset19:57
Saturday 22/8 Sunny
104°82°17%⌄
Wind15 mph S
Gusts26 mph
UV index11 – Very high
Precip chance17%
Sunrise06:53
Sunset19:56
Sunday 23/8 Sunny
104°81°3%⌄
Wind14 mph SE
Gusts23 mph
UV index10 – Very high
Precip chance3%
Sunrise06:54
Sunset19:54
Monday 24/8 Sunny
104°80°4%⌄
Wind16 mph SE
Gusts26 mph
UV index10 – Very high
Precip chance4%
Sunrise06:54
Sunset19:53
Tuesday 25/8 Sunny
102°80°6%⌄
Wind14 mph SE
Gusts21 mph
UV index9 – Very high
Precip chance6%
Sunrise06:55
Sunset19:52
Wednesday 26/8 Sunny
103°80°7%⌄
Wind14 mph SE
Gusts23 mph
UV index9 – Very high
Precip chance7%
Sunrise06:56
Sunset19:51
Thursday 27/8 Sunny
104°79°4%⌄
Wind13 mph SE
Gusts21 mph
UV index9 – Very high
Precip chance4%
Sunrise06:56
Sunset19:50
Friday 28/8 Sunny
105°80°5%⌄
Wind15 mph SE
Gusts20 mph
UV index10 – Very high
Precip chance5%
Sunrise06:57
Sunset19:49
Saturday 29/8 Sunny
106°80°3%⌄
Wind14 mph SE
Gusts23 mph
UV index10 – Very high
Precip chance3%
Sunrise06:57
Sunset19:48
Sunday 30/8 Sunny
106°80°3%⌄
Wind15 mph S
Gusts20 mph
UV index10 – Very high
Precip chance3%
Sunrise06:58
Sunset19:47
Monday 31/8 Sunny
100°81°8%⌄
Wind13 mph SE
Gusts21 mph
UV index9 – Very high
Precip chance8%
Sunrise06:58
Sunset19:45
Tuesday 1/9 Mostly cloudy
99°80°10%⌄
Wind15 mph SE
Gusts19 mph
UV index9 – Very high
Precip chance10%
Sunrise06:59
Sunset19:44
Wednesday 2/9 Sunny
98°80°6%⌄
Wind14 mph SE
Gusts23 mph
UV index9 – Very high
Precip chance6%
Sunrise06:59
Sunset19:43
Thursday 3/9 Rain (climatological)
98°76°2.9 mm⌄
Day≈92–103°
Night≈71–82°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 4/9 Partly cloudy (climatological)
105°81°20%⌄
Day≈100–110°
Night≈75–86°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Partly cloudy (climatological)
102°79°20%⌄
Day≈96–107°
Night≈73–84°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Light rain (climatological)
100°77°2.0 mm⌄
Day≈94–105°
Night≈72–83°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
100°77°20%⌄
Day≈94–105°
Night≈72–83°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
98°76°20%⌄
Day≈92–103°
Night≈71–82°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Rain (climatological)
94°74°3.1 mm⌄
Day≈88–99°
Night≈69–79°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
101°78°20%⌄
Day≈96–107°
Night≈73–84°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
106°81°20%⌄
Day≈100–111°
Night≈76–87°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Rain (climatological)
102°79°3.2 mm⌄
Day≈96–107°
Night≈73–84°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
103°80°20%⌄
Day≈98–109°
Night≈74–85°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
96°75°20%⌄
Day≈91–101°
Night≈70–81°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Rain (climatological)
95°75°3.9 mm⌄
Day≈90–101°
Night≈69–80°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
95°75°20%⌄
Day≈90–101°
Night≈69–80°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
100°78°20%⌄
Day≈94–105°
Night≈72–83°
Precip≈1.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Rain (climatological)
103°79°3.1 mm⌄
Day≈97–108°
Night≈74–85°
Precip≈1.3 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 Spring 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.