De Witt · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
De Witt & 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
112°
Thu, Sep 3
Coldest night
73°
Sun, Aug 23
Days with precip
3 / 14
of 14 forecast days
Nicest day
Tue, Sep 1
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 22 – Sun 23 Aug
105° 73°
36% precip chance
Sat 29 – Sun 30 Aug
109° 75°
57% precip chance
Sat 5 – Sun 6 Sep
106° 76°
typical range
Sat 12 – Sun 13 Sep
102° 74°
typical range
30 days — De Witt
14 forecast + 16 climatology
Fri · Today Sunny
104°74°0.9 mm⌄
Wind12 mph N
Gusts24 mph
UV index9 – Very high
Precip chance36%
Sunrise06:30
Sunset19:46
Sat · Tomorrow Sunny
104°74°4%⌄
Wind17 mph N
Gusts27 mph
UV index9 – Very high
Precip chance4%
Sunrise06:31
Sunset19:44
Sunday 23/8 Sunny
105°73°0.4 mm⌄
Wind9 mph NE
Gusts18 mph
UV index9 – Very high
Precip chance36%
Sunrise06:32
Sunset19:43
Monday 24/8 Showers
84°74°2.4 mm⌄
Wind17 mph SE
Gusts40 mph
UV index5 – Moderate
Precip chance71%
Sunrise06:33
Sunset19:42
Tuesday 25/8 Sunny
105°80°0.3 mm⌄
Wind19 mph S
Gusts40 mph
UV index9 – Very high
Precip chance17%
Sunrise06:33
Sunset19:41
Wednesday 26/8 Mostly cloudy
101°78°3.2 mm⌄
Wind15 mph SW
Gusts33 mph
UV index8 – Very high
Precip chance61%
Sunrise06:34
Sunset19:39
Thursday 27/8 Sunny
109°77°0.1 mm⌄
Wind13 mph W
Gusts24 mph
UV index10 – Very high
Precip chance17%
Sunrise06:35
Sunset19:38
Friday 28/8 Sunny
109°77°2%⌄
Wind12 mph S
Gusts31 mph
UV index10 – Very high
Precip chance2%
Sunrise06:35
Sunset19:37
Saturday 29/8 Sunny
109°81°3%⌄
Wind15 mph W
Gusts31 mph
UV index10 – Very high
Precip chance3%
Sunrise06:36
Sunset19:35
Sunday 30/8 Showers
109°75°1.2 mm⌄
Wind12 mph W
Gusts22 mph
UV index10 – Very high
Precip chance57%
Sunrise06:37
Sunset19:34
Monday 31/8 Sunny
109°78°2%⌄
Wind7 mph E
Gusts14 mph
UV index10 – Very high
Precip chance2%
Sunrise06:38
Sunset19:33
Tuesday 1/9 Mostly cloudy
104°83°5%⌄
Wind9 mph S
Gusts21 mph
UV index8 – Very high
Precip chance5%
Sunrise06:38
Sunset19:31
Wednesday 2/9 Sunny
112°79°0.1 mm⌄
Wind10 mph SW
Gusts21 mph
UV index10 – Very high
Precip chance17%
Sunrise06:39
Sunset19:30
Thursday 3/9 Sunny
112°80°1%⌄
Wind9 mph E
Gusts14 mph
UV index10 – Very high
Precip chance1%
Sunrise06:40
Sunset19:29
Friday 4/9 Light rain (climatological)
101°74°1.5 mm⌄
Day≈96–107°
Night≈68–79°
Precip≈0.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Partly cloudy (climatological)
105°76°20%⌄
Day≈99–110°
Night≈70–81°
Precip≈0.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Partly cloudy (climatological)
106°76°20%⌄
Day≈100–111°
Night≈71–82°
Precip≈0.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Light rain (climatological)
104°75°1.1 mm⌄
Day≈98–109°
Night≈70–81°
Precip≈0.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
96°71°20%⌄
Day≈91–101°
Night≈65–76°
Precip≈0.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
94°69°20%⌄
Day≈88–99°
Night≈64–74°
Precip≈0.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Light rain (climatological)
94°69°1.9 mm⌄
Day≈89–99°
Night≈64–75°
Precip≈0.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
101°74°20%⌄
Day≈96–107°
Night≈68–79°
Precip≈0.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
101°74°20%⌄
Day≈96–106°
Night≈68–79°
Precip≈0.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Light rain (climatological)
102°74°1.4 mm⌄
Day≈97–108°
Night≈69–80°
Precip≈0.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
101°73°20%⌄
Day≈95–106°
Night≈68–79°
Precip≈0.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
98°72°20%⌄
Day≈93–104°
Night≈67–78°
Precip≈0.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Light rain (climatological)
95°70°1.6 mm⌄
Day≈90–101°
Night≈65–76°
Precip≈0.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
97°71°20%⌄
Day≈91–102°
Night≈66–76°
Precip≈0.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
98°72°20%⌄
Day≈93–104°
Night≈67–77°
Precip≈0.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Light rain (climatological)
101°74°1.3 mm⌄
Day≈96–107°
Night≈68–79°
Precip≈0.7 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 De Witt, 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.