National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

40°F

4°C

Humidity 43%
Wind Speed NW 13 mph
Barometer 30.22 in (1024.5 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 21 Feb 3:51 pm CST
Extended Forecast for

Saint Louis MO

  • Tonight

    Tonight: Mostly clear, with a low around 23. Northwest wind 9 to 14 mph, with gusts as high as 26 mph.

    Low: 23 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 33. Northwest wind 15 to 18 mph, with gusts as high as 30 mph.

    High: 33 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17. Northwest wind 13 to 15 mph, with gusts as high as 26 mph.

    Low: 17 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 34. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 22. Calm wind becoming south around 5 mph after midnight.

    Low: 22 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 23. Northwest wind 9 to 14 mph, with gusts as high as 26 mph.
Sunday
Sunny, with a high near 33. Northwest wind 15 to 18 mph, with gusts as high as 30 mph.
Sunday Night
Partly cloudy, with a low around 17. Northwest wind 13 to 15 mph, with gusts as high as 26 mph.
Monday
Sunny, with a high near 34. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 22. Calm wind becoming south around 5 mph after midnight.
Tuesday
Partly sunny, with a high near 55.
Tuesday Night
Mostly cloudy, with a low around 43.
Wednesday
Partly sunny, with a high near 59.
Wednesday Night
A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 37.
Thursday
A 40 percent chance of rain. Mostly sunny, with a high near 52.
Thursday Night
Mostly clear, with a low around 32.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 41.
Saturday
Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Louis MO
 38.64°N 90.26°W (Elev. 499 ft)
Last Update:
12:26 pm CST Feb 21, 2026
Forecast Valid:
4pm CST Feb 21, 2026-6pm CST Feb 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation