St. Louis, MO Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for St. Louis, MO.

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Current Conditions — Saint Louis, MO

ST CHARLES (KSET)

Clear

57.2 F
Humidity:82%
Wind Speed:SW 6.9 mph
Barometer:30.05 in
Dewpoint:51.8 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 22 2026, 06:35 AM CDT
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5-Day Forecast — Saint Louis, MO

Wednesday

High 82 °F
Partly Sunny
Wednesday
Night
Low 59 °F
Mostly Clear
Thursday

High 84 °F
Partly Sunny
Thursday
Night
Low 64 °F
T-storms Likely
Friday

High 77 °F
T-storms
Friday
Night
Low 57 °F
Chance of Rain
Saturday

High 77 °F
Partly Sunny
Saturday
Night
Low 55 °F
Slight Chance of Showers
Sunday

High 78 °F
Isolated T-storm

Detailed Forecast — Saint Louis, MO

Wednesday
Partly Sunny. High near 82°F. Wind 6 to 8 mph, with gusts as high as 14 mph.
Wednesday Night
Mostly Clear. Low around 59°F. Wind around 6 mph, with gusts as high as 12 mph.
Thursday
Partly Sunny. High near 84°F. Wind 7 to 15 mph, with gusts as high as 26 mph.
Thursday Night
Thunderstorms Likely. Low around 64°F. Wind 10 to 12 mph, with gusts as high as 21 mph.
Friday
Thunderstorms. High near 77°F. Wind 6 to 10 mph, with gusts as high as 20 mph.
Friday Night
Chance of Rain. Low around 57°F. Wind around 3 mph, with gusts as high as 8 mph.
Saturday
Partly Sunny. High near 77°F. Wind 5 to 7 mph, with gusts as high as 12 mph.
Saturday Night
Slight Chance of Showers. Low around 55°F. Wind around 5 mph, with gusts as high as 8 mph.
Sunday
Isolated T-storm. High near 78°F. Wind 9 to 10 mph, with gusts as high as 16 mph.
Sunday Night
Thunderstorms Likely. Low around 60°F. Wind around 13 mph, with gusts as high as 20 mph.
Monday
Thunderstorms Likely. High near 80°F. Wind around 13 mph, with gusts as high as 23 mph.
Monday Night
Chance of Showers. Low around 55°F. Wind around 9 mph, with gusts as high as 16 mph.
Tuesday
Partly Sunny. High near 73°F. Wind 6 to 10 mph, with gusts as high as 17 mph.
MO Radar
Current Radar • MO
Day 1 Outlook • April 22, 2026

Observation History — Saint Louis, MO

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
06:35 AM CDT SW 6.9 10.00 Clear -- 57.2 51.8 82% NA NA 30.05 1017.6
06:30 AM CDT SW 6.9 10.00 Clear -- 57.2 51.8 82% NA NA 30.05 1017.6
06:20 AM CDT SW 6.9 10.00 Clear -- 57.2 51.8 82% NA NA 30.04 1017.3
06:10 AM CDT 5.7 10.00 Clear -- 55.4 51.8 88% NA NA 30.04 1017.3
06:05 AM CDT SW 6.9 10.00 Clear -- 55.4 51.8 88% NA NA 30.04 1017.3
06:00 AM CDT SW 6.9 10.00 Clear -- 57.2 51.8 82% NA NA 30.04 1017.3
05:45 AM CDT SW 6.9 10.00 Clear -- 57.2 51.8 82% NA NA 30.04 1017.3
05:35 AM CDT SW 6.9 10.00 Clear -- 57.2 51.8 82% NA NA 30.04 1017.3
05:10 AM CDT 6.9 10.00 Clear -- 57.2 51.8 82% NA NA 30.04 1017.3
05:05 AM CDT 6.9 10.00 Clear -- 57.2 51.8 82% NA NA 30.04 1017.3
05:00 AM CDT 6.9 10.00 Clear -- 59.0 51.8 77% NA NA 30.04 1017.3
04:50 AM CDT 5.7 10.00 Clear -- 57.2 51.8 82% NA NA 30.04 1017.3
04:35 AM CDT 5.7 10.00 Clear -- 57.2 51.8 82% NA NA 30.03 1016.9
04:30 AM CDT 4.6 10.00 Clear -- 57.2 51.8 82% NA NA 30.03 1016.9
04:25 AM CDT 4.6 10.00 Clear -- 57.2 51.8 82% NA NA 30.03 1016.9
04:20 AM CDT 4.6 10.00 Clear -- 57.2 51.8 82% NA NA 30.03 1016.9
04:00 AM CDT 4.6 10.00 Clear -- 60.8 51.8 72% NA NA 30.03 1016.9
03:50 AM CDT SW 4.6 10.00 Clear -- 60.8 51.8 72% NA NA 30.03 1016.9
03:45 AM CDT SW 5.7 10.00 Clear -- 60.8 51.8 72% NA NA 30.02 1016.6
03:35 AM CDT SW 5.7 10.00 Clear -- 62.6 51.8 68% NA NA 30.02 1016.6
03:30 AM CDT SW 5.7 10.00 Clear -- 62.6 51.8 68% NA NA 30.02 1016.6
03:20 AM CDT SW 8.1 10.00 Mostly Clear -- 62.6 51.8 68% NA NA 30.02 1016.6
03:15 AM CDT SW 9.2 10.00 Mostly Clear -- 62.6 51.8 68% NA NA 30.02 1016.6
03:10 AM CDT SW 9.2 10.00 Partly Cloudy -- 64.4 51.8 64% NA NA 30.02 1016.6

Regional Weather Observation

ST CHARLES (KSET)

Clear
57.2 F

ALTON/ST LOUIS R (KALN)

Clear
59.5 F

ST LOUIS (KSTL)

Clear
60.8 F

ST LOUIS/SPIRIT (KSUS)

Clear
59.0 F

CAHOKIA/ST LOUIS (KCPS)

Clear
55.4 F

SCOTT AFB/BELLEV (KBLV)

Clear
54.5 F
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