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.

A Few Clouds

34°F

1°C

Humidity 56%
Wind Speed SW 10 mph
Barometer 30.07 in (1019.2 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 21 Jan 7:51 am CST
Extended Forecast for

Saint Louis MO

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 46. West wind 9 to 14 mph, with gusts as high as 25 mph.

    High: 46 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 24. Southwest wind 6 to 13 mph becoming northwest after midnight. Winds could gust as high as 24 mph.

    Low: 24 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 39. Light west wind.

    High: 39 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 9. Light north wind increasing to 9 to 14 mph after midnight. Winds could gust as high as 23 mph.

    Low: 9 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 15. North wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 15 °F

    Cold

  • Friday Night

    Friday Night: A 20 percent chance of snow after midnight. Cloudy, with a low around 3.

    Low: 3 °F

    Cloudy then
    Slight Chance
    Snow

  • Saturday

    Saturday: A 50 percent chance of snow. Cloudy and cold, with a high near 13.

    High: 13 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 9.

    Low: 9 °F

    Chance Snow
    then Slight
    Chance Snow

  • Sunday

    Sunday: A 20 percent chance of snow before noon. Partly sunny and cold, with a high near 20.

    High: 20 °F

    Slight Chance
    Snow then
    Partly Sunny

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 46. West wind 9 to 14 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 24. Southwest wind 6 to 13 mph becoming northwest after midnight. Winds could gust as high as 24 mph.
Thursday
Partly sunny, with a high near 39. Light west wind.
Thursday Night
Mostly cloudy, with a low around 9. Light north wind increasing to 9 to 14 mph after midnight. Winds could gust as high as 23 mph.
Friday
Mostly cloudy and cold, with a high near 15. North wind 10 to 14 mph, with gusts as high as 24 mph.
Friday Night
A 20 percent chance of snow after midnight. Cloudy, with a low around 3.
Saturday
A 50 percent chance of snow. Cloudy and cold, with a high near 13.
Saturday Night
A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 9.
Sunday
A 20 percent chance of snow before noon. Partly sunny and cold, with a high near 20.
Sunday Night
Partly cloudy, with a low around 6.
Monday
Sunny, with a high near 23.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Mostly sunny, with a high near 36.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Louis MO
 38.64°N 90.23°W (Elev. 538 ft)
Last Update:
6:11 am CST Jan 21, 2026
Forecast Valid:
8am CST Jan 21, 2026-6pm CST Jan 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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