St. Louis · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
St. Louis & 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
104°
Sat, Aug 29
Coldest night
60°
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
88° 68°
59% precip chance
Sat 29 – Sun 30 Aug
104° 74°
36% precip chance
Sat 5 – Sun 6 Sep
87° 66°
typical range
Sat 12 – Sun 13 Sep
85° 64°
typical range
30 days — St. Louis
14 forecast + 16 climatology
Fri · Today Sunny
95°67°5%⌄
Wind6 mph S
Gusts15 mph
UV index8 – High
Precip chance5%
Sunrise06:20
Sunset19:47
Sat · Tomorrow Showers
88°71°2.1 mm⌄
Wind10 mph W
Gusts21 mph
UV index8 – High
Precip chance59%
Sunrise06:21
Sunset19:46
Sunday 23/8 Mostly cloudy
83°68°9%⌄
Wind10 mph E
Gusts24 mph
UV index8 – Very high
Precip chance9%
Sunrise06:22
Sunset19:44
Monday 24/8 Mostly cloudy
82°65°0.4 mm⌄
Wind10 mph E
Gusts25 mph
UV index6 – Moderate
Precip chance36%
Sunrise06:23
Sunset19:43
Tuesday 25/8 Mostly cloudy
88°67°17%⌄
Wind10 mph SE
Gusts22 mph
UV index8 – Very high
Precip chance17%
Sunrise06:23
Sunset19:41
Wednesday 26/8 Sunny
93°73°11%⌄
Wind11 mph E
Gusts20 mph
UV index8 – Very high
Precip chance11%
Sunrise06:24
Sunset19:40
Thursday 27/8 Sunny
90°71°2%⌄
Wind9 mph N
Gusts18 mph
UV index8 – Very high
Precip chance2%
Sunrise06:25
Sunset19:38
Friday 28/8 Sunny
98°71°3%⌄
Wind11 mph E
Gusts29 mph
UV index9 – Very high
Precip chance3%
Sunrise06:26
Sunset19:37
Saturday 29/8 Showers
104°79°0.9 mm⌄
Wind15 mph SW
Gusts36 mph
UV index9 – Very high
Precip chance36%
Sunrise06:27
Sunset19:35
Sunday 30/8 Sunny
94°74°3%⌄
Wind14 mph NW
Gusts28 mph
UV index8 – Very high
Precip chance3%
Sunrise06:28
Sunset19:34
Monday 31/8 Sunny
93°67°4%⌄
Wind14 mph SE
Gusts32 mph
UV index8 – Very high
Precip chance4%
Sunrise06:29
Sunset19:33
Tuesday 1/9 Sunny
103°75°0.3 mm⌄
Wind16 mph S
Gusts35 mph
UV index9 – Very high
Precip chance17%
Sunrise06:30
Sunset19:31
Wednesday 2/9 Sunny
94°73°2%⌄
Wind11 mph E
Gusts23 mph
UV index8 – Very high
Precip chance2%
Sunrise06:31
Sunset19:29
Thursday 3/9 Sunny
88°60°1.2 mm⌄
Wind12 mph E
Gusts28 mph
UV index8 – Very high
Precip chance57%
Sunrise06:31
Sunset19:28
Friday 4/9 Rain (climatological)
83°64°15.7 mm⌄
Day≈77–88°
Night≈58–69°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 5/9 Partly cloudy (climatological)
87°66°20%⌄
Day≈81–92°
Night≈61–72°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 6/9 Partly cloudy (climatological)
87°67°20%⌄
Day≈82–93°
Night≈61–72°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 7/9 Rain (climatological)
85°65°8.5 mm⌄
Day≈79–90°
Night≈60–70°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 8/9 Partly cloudy (climatological)
78°61°20%⌄
Day≈72–83°
Night≈55–66°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
79°62°20%⌄
Day≈74–85°
Night≈56–67°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Rain (climatological)
79°62°14.9 mm⌄
Day≈74–85°
Night≈56–67°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Partly cloudy (climatological)
80°62°20%⌄
Day≈75–86°
Night≈57–68°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
83°64°20%⌄
Day≈78–89°
Night≈59–70°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Rain (climatological)
85°65°8.1 mm⌄
Day≈80–90°
Night≈60–71°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Partly cloudy (climatological)
83°64°20%⌄
Day≈78–89°
Night≈59–70°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
78°61°20%⌄
Day≈73–84°
Night≈56–67°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Rain (climatological)
78°61°10.5 mm⌄
Day≈72–83°
Night≈55–66°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Partly cloudy (climatological)
76°60°20%⌄
Day≈71–82°
Night≈55–65°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
83°64°20%⌄
Day≈78–89°
Night≈59–69°
Precip≈4.8 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Rain (climatological)
86°66°8.1 mm⌄
Day≈80–91°
Night≈60–71°
Precip≈4.8 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 St. Louis, 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.