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.

Partly Cloudy

40°F

4°C

Humidity 45%
Wind Speed SE 10 mph
Barometer 29.91 in (1014.1 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 5 Dec 2:51 pm CST
Extended Forecast for

Saint Louis MO

  • Tonight

    Tonight: Increasing clouds, with a low around 29. South wind around 6 mph becoming west after midnight.

    Low: 29 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 39. Calm wind becoming east around 5 mph in the afternoon.

    High: 39 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 32. South wind around 6 mph.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain

  • Sunday

    Sunday: A chance of rain before 9am, then a chance of rain and snow between 9am and noon, then a slight chance of snow after noon. Mostly cloudy, with a high near 38. Southeast wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

    High: 38 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 15. North wind 5 to 9 mph becoming light after midnight.

    Low: 15 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 29. South wind around 6 mph becoming west after midnight.
Saturday
Partly sunny, with a high near 39. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 32. South wind around 6 mph.
Sunday
A chance of rain before 9am, then a chance of rain and snow between 9am and noon, then a slight chance of snow after noon. Mostly cloudy, with a high near 38. Southeast wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 15. North wind 5 to 9 mph becoming light after midnight.
Monday
Mostly sunny, with a high near 32.
Monday Night
Partly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 46.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 47.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
Mostly cloudy, with a high near 34.
Thursday Night
Mostly cloudy, with a low around 22.
Friday
Mostly sunny, with a high near 32.
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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:
1:56 pm CST Dec 5, 2025
Forecast Valid:
3pm CST Dec 5, 2025-6pm CST Dec 12, 2025
 
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