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
97°
Sat, Sep 5
Coldest night
54°
Thu, Sep 10
Days with precip
4 / 14
of 14 forecast days
Nicest day
Tue, Sep 8
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
91° 64°
63% precip chance
Sat 5 – Sun 6 Sep
97° 69°
57% precip chance
Sat 12 – Sun 13 Sep
84° 63°
typical range
Sat 19 – Sun 20 Sep
83° 64°
typical range
30 days — De Witt
14 forecast + 16 climatology
Fri · Today Sunny
85°55°6%⌄
Wind7 mph W
Gusts13 mph
UV index7 – High
Precip chance6%
Sunrise06:23
Sunset19:42
Sat · Tomorrow Mostly cloudy
78°64°21%⌄
Wind19 mph SE
Gusts41 mph
UV index7 – High
Precip chance21%
Sunrise06:25
Sunset19:41
Sunday 30/8 Showers
91°67°2.3 mm⌄
Wind19 mph S
Gusts39 mph
UV index7 – High
Precip chance63%
Sunrise06:26
Sunset19:39
Monday 31/8 Mostly cloudy
94°74°0.6 mm⌄
Wind14 mph SW
Gusts39 mph
UV index8 – Very high
Precip chance39%
Sunrise06:27
Sunset19:37
Tuesday 1/9 Mostly cloudy
95°76°9%⌄
Wind15 mph SW
Gusts32 mph
UV index8 – Very high
Precip chance9%
Sunrise06:28
Sunset19:36
Wednesday 2/9 Sunny
93°78°2%⌄
Wind16 mph SW
Gusts40 mph
UV index8 – Very high
Precip chance2%
Sunrise06:29
Sunset19:34
Thursday 3/9 Sunny
93°76°4%⌄
Wind13 mph SW
Gusts32 mph
UV index8 – Very high
Precip chance4%
Sunrise06:30
Sunset19:32
Friday 4/9 Sunny
95°78°17%⌄
Wind11 mph S
Gusts32 mph
UV index8 – Very high
Precip chance17%
Sunrise06:31
Sunset19:31
Saturday 5/9 Mostly cloudy
97°75°1.8 mm⌄
Wind8 mph NW
Gusts15 mph
UV index8 – Very high
Precip chance57%
Sunrise06:32
Sunset19:29
Sunday 6/9 Partly cloudy
83°69°0.1 mm⌄
Wind14 mph N
Gusts26 mph
UV index7 – High
Precip chance25%
Sunrise06:33
Sunset19:27
Monday 7/9 Sunny
83°65°9%⌄
Wind9 mph NE
Gusts19 mph
UV index7 – High
Precip chance9%
Sunrise06:34
Sunset19:26
Tuesday 8/9 Mostly cloudy
73°66°19%⌄
Wind7 mph W
Gusts15 mph
UV index5 – Moderate
Precip chance19%
Sunrise06:35
Sunset19:24
Wednesday 9/9 Showers
70°57°17.2 mm⌄
Wind16 mph NE
Gusts30 mph
UV index4 – Moderate
Precip chance89%
Sunrise06:36
Sunset19:22
Thursday 10/9 Showers
65°54°5.0 mm⌄
Wind15 mph N
Gusts25 mph
UV index4 – Moderate
Precip chance85%
Sunrise06:37
Sunset19:20
Friday 11/9 Rain (climatological)
78°62°5.3 mm⌄
Day≈73–83°
Night≈56–67°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
80°63°20%⌄
Day≈75–86°
Night≈57–68°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
84°65°20%⌄
Day≈79–90°
Night≈60–71°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Rain (climatological)
80°63°3.5 mm⌄
Day≈75–86°
Night≈58–68°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
76°61°20%⌄
Day≈71–82°
Night≈55–66°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
71°57°20%⌄
Day≈66–76°
Night≈52–63°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Rain (climatological)
74°59°6.7 mm⌄
Day≈69–79°
Night≈54–65°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
75°60°20%⌄
Day≈70–81°
Night≈55–65°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
83°64°20%⌄
Day≈78–88°
Night≈59–70°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Rain (climatological)
81°64°6.7 mm⌄
Day≈76–87°
Night≈58–69°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
77°61°20%⌄
Day≈71–82°
Night≈55–66°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
77°61°20%⌄
Day≈71–82°
Night≈55–66°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Rain (climatological)
74°59°3.9 mm⌄
Day≈69–80°
Night≈54–65°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
75°60°20%⌄
Day≈69–80°
Night≈54–65°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
75°60°20%⌄
Day≈70–80°
Night≈54–65°
Precip≈2.3 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Rain (climatological)
78°62°5.5 mm⌄
Day≈73–84°
Night≈56–67°
Precip≈2.3 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 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.