Clayton · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Clayton & 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
102°
Wed, Sep 2
Coldest night
65°
Thu, Sep 10
Days with precip
6 / 14
of 14 forecast days
Nicest day
Thu, Sep 10
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
98° 71°
73% precip chance
Sat 12 – Sun 13 Sep
96° 70°
74% precip chance
Sat 19 – Sun 20 Sep
94° 72°
typical range
Sat 26 – Sun 27 Sep
92° 70°
typical range
30 days — Clayton
14 forecast + 16 climatology
Wed · Today Sunny
102°74°4%⌄
Wind11 mph S
Gusts23 mph
UV index9 – Very high
Precip chance4%
Sunrise06:46
Sunset19:40
Thu · Tomorrow Sunny
98°77°0.2 mm⌄
Wind15 mph S
Gusts27 mph
UV index9 – Very high
Precip chance17%
Sunrise06:47
Sunset19:38
Friday 4/9 Sunny
99°76°0.4 mm⌄
Wind12 mph W
Gusts28 mph
UV index8 – Very high
Precip chance36%
Sunrise06:48
Sunset19:37
Saturday 5/9 Mostly cloudy
98°71°5.1 mm⌄
Wind13 mph NE
Gusts25 mph
UV index8 – High
Precip chance73%
Sunrise06:49
Sunset19:36
Sunday 6/9 Mostly cloudy
87°71°0.5 mm⌄
Wind12 mph E
Gusts23 mph
UV index8 – Very high
Precip chance39%
Sunrise06:49
Sunset19:34
Monday 7/9 Mostly cloudy
86°70°12%⌄
Wind9 mph NE
Gusts21 mph
UV index7 – High
Precip chance12%
Sunrise06:50
Sunset19:33
Tuesday 8/9 Mostly cloudy
89°71°1.3 mm⌄
Wind10 mph SW
Gusts15 mph
UV index7 – High
Precip chance58%
Sunrise06:51
Sunset19:31
Wednesday 9/9 Mostly cloudy
77°67°14.2 mm⌄
Wind14 mph N
Gusts23 mph
UV index5 – Moderate
Precip chance89%
Sunrise06:52
Sunset19:30
Thursday 10/9 Mostly cloudy
85°65°12%⌄
Wind9 mph S
Gusts20 mph
UV index7 – High
Precip chance12%
Sunrise06:52
Sunset19:28
Friday 11/9 Sunny
99°74°6%⌄
Wind10 mph SW
Gusts22 mph
UV index9 – Very high
Precip chance6%
Sunrise06:53
Sunset19:27
Saturday 12/9 Sunny
96°73°11.7 mm⌄
Wind15 mph E
Gusts31 mph
UV index9 – Very high
Precip chance74%
Sunrise06:54
Sunset19:25
Sunday 13/9 Mostly cloudy
84°70°5.1 mm⌄
Wind10 mph E
Gusts21 mph
UV index7 – High
Precip chance70%
Sunrise06:55
Sunset19:24
Monday 14/9 Sunny
92°73°7%⌄
Wind11 mph SW
Gusts25 mph
UV index8 – Very high
Precip chance7%
Sunrise06:55
Sunset19:22
Tuesday 15/9 Sunny
97°72°5.1 mm⌄
Wind16 mph NE
Gusts25 mph
UV index9 – Very high
Precip chance64%
Sunrise06:56
Sunset19:21
Wednesday 16/9 Rain (climatological)
92°72°8.6 mm⌄
Day≈86–97°
Night≈66–77°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
97°75°20%⌄
Day≈91–102°
Night≈69–80°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
99°76°20%⌄
Day≈94–104°
Night≈71–82°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
94°73°5.4 mm⌄
Day≈89–100°
Night≈68–79°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Partly cloudy (climatological)
92°72°20%⌄
Day≈87–97°
Night≈66–77°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
88°69°20%⌄
Day≈83–94°
Night≈64–75°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Rain (climatological)
87°69°11.7 mm⌄
Day≈82–92°
Night≈64–74°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Partly cloudy (climatological)
90°71°20%⌄
Day≈84–95°
Night≈65–76°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
94°73°20%⌄
Day≈89–100°
Night≈68–79°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Rain (climatological)
94°73°10.8 mm⌄
Day≈89–99°
Night≈68–78°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Partly cloudy (climatological)
92°72°20%⌄
Day≈87–98°
Night≈67–77°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
89°70°20%⌄
Day≈84–95°
Night≈65–76°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Rain (climatological)
85°68°5.4 mm⌄
Day≈80–91°
Night≈62–73°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Partly cloudy (climatological)
90°71°20%⌄
Day≈85–96°
Night≈65–76°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Partly cloudy (climatological)
92°72°20%⌄
Day≈87–98°
Night≈67–77°
Precip≈3.7 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Rain (climatological)
88°66°5.1 mm⌄
Day≈82–93°
Night≈61–72°
Precip≈3.7 in / October
(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 Clayton, 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.