Valley Park · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Valley Park & 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
105°
Mon, Aug 31
Coldest night
62°
Thu, Sep 3
Days with precip
2 / 14
of 14 forecast days
Nicest day
Sun, Aug 23
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
90° 69°
17% precip chance
Sat 29 – Sun 30 Aug
100° 76°
57% precip chance
Sat 5 – Sun 6 Sep
90° 66°
typical range
Sat 12 – Sun 13 Sep
89° 65°
typical range
30 days — Valley Park
14 forecast + 16 climatology
Fri · Today Sunny
92°67°5%⌄
Wind6 mph NE
Gusts16 mph
UV index8 – Very high
Precip chance5%
Sunrise06:21
Sunset19:48
Sat · Tomorrow Sunny
90°72°0.2 mm⌄
Wind7 mph N
Gusts12 mph
UV index8 – High
Precip chance17%
Sunrise06:22
Sunset19:47
Sunday 23/8 Mostly cloudy
82°69°10%⌄
Wind7 mph E
Gusts16 mph
UV index8 – Very high
Precip chance10%
Sunrise06:23
Sunset19:45
Monday 24/8 Sunny
79°65°13%⌄
Wind11 mph E
Gusts24 mph
UV index8 – Very high
Precip chance13%
Sunrise06:24
Sunset19:44
Tuesday 25/8 Mostly cloudy
85°67°20%⌄
Wind9 mph SE
Gusts22 mph
UV index7 – High
Precip chance20%
Sunrise06:25
Sunset19:42
Wednesday 26/8 Sunny
88°69°0.4 mm⌄
Wind6 mph SE
Gusts17 mph
UV index7 – High
Precip chance36%
Sunrise06:26
Sunset19:41
Thursday 27/8 Sunny
91°74°3.2 mm⌄
Wind6 mph NE
Gusts15 mph
UV index8 – Very high
Precip chance57%
Sunrise06:26
Sunset19:40
Friday 28/8 Sunny
93°68°7%⌄
Wind9 mph SE
Gusts19 mph
UV index8 – Very high
Precip chance7%
Sunrise06:27
Sunset19:38
Saturday 29/8 Thunderstorms
100°80°1.2 mm⌄
Wind11 mph SE
Gusts34 mph
UV index9 – Very high
Precip chance57%
Sunrise06:28
Sunset19:37
Sunday 30/8 Mostly cloudy
100°76°6%⌄
Wind11 mph SE
Gusts33 mph
UV index9 – Very high
Precip chance6%
Sunrise06:29
Sunset19:35
Monday 31/8 Sunny
105°86°3%⌄
Wind13 mph S
Gusts35 mph
UV index10 – Very high
Precip chance3%
Sunrise06:30
Sunset19:34
Tuesday 1/9 Sunny
101°77°2%⌄
Wind13 mph SW
Gusts34 mph
UV index9 – Very high
Precip chance2%
Sunrise06:31
Sunset19:32
Wednesday 2/9 Sunny
96°75°2%⌄
Wind10 mph E
Gusts23 mph
UV index9 – Very high
Precip chance2%
Sunrise06:32
Sunset19:31
Thursday 3/9 Sunny
87°62°0.6 mm⌄
Wind10 mph E
Gusts28 mph
UV index8 – Very high
Precip chance36%
Sunrise06:33
Sunset19:29
Saturday 5/9 Light rain (climatological)
85°66°1.1 mm⌄
Day≈80–90°
Night≈61–71°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Partly cloudy (climatological)
90°69°20%⌄
Day≈85–96°
Night≈64–74°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Partly cloudy (climatological)
91°69°20%⌄
Day≈85–96°
Night≈64–75°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Light rain (climatological)
85°66°1.3 mm⌄
Day≈80–90°
Night≈61–71°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
86°66°20%⌄
Day≈80–91°
Night≈61–72°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
80°63°20%⌄
Day≈75–85°
Night≈58–68°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Light rain (climatological)
80°63°0.8 mm⌄
Day≈75–86°
Night≈58–69°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
83°65°20%⌄
Day≈78–89°
Night≈60–70°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
89°68°20%⌄
Day≈83–94°
Night≈63–74°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Light rain (climatological)
90°69°1.2 mm⌄
Day≈85–95°
Night≈64–74°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
88°68°20%⌄
Day≈83–93°
Night≈62–73°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
84°66°20%⌄
Day≈79–90°
Night≈60–71°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Light rain (climatological)
80°63°1.7 mm⌄
Day≈74–85°
Night≈57–68°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
83°65°20%⌄
Day≈78–89°
Night≈60–70°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
87°67°20%⌄
Day≈82–92°
Night≈62–73°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Light rain (climatological)
87°67°1.5 mm⌄
Day≈82–93°
Night≈62–73°
Precip≈0.6 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 Valley Park, 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.