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 60%
Wind Speed E 9 mph
Barometer 30.09 in (1019.1 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 14 Mar 4:51 am CDT
Extended Forecast for

Saint Louis MO

  • Today

    Today: Mostly sunny, with a high near 64. East wind 5 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 22 mph.

    High: 64 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 56. South wind 10 to 14 mph, with gusts as high as 25 mph.

    Low: 56 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A chance of rain and thunderstorms, then rain after 1pm. High near 68. Breezy, with a south wind 18 to 21 mph, with gusts as high as 38 mph. Chance of precipitation is 90%.

    High: 68 °F

    Breezy.
    Chance Rain
    then Rain

  • Sunday Night

    Sunday Night: Rain before 10pm, then rain and snow between 10pm and 1am, then a chance of snow after 1am. Low around 21. Blustery, with a southwest wind 18 to 24 mph becoming northwest after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 21 °F

    Rain/Snow and
    Blustery

  • Monday

    Monday: A 20 percent chance of snow before 1pm. Mostly cloudy, with a high near 28. Blustery, with a northwest wind 18 to 23 mph, with gusts as high as 39 mph.

    High: 28 °F

    Slight Chance
    Snow and
    Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 14.

    Low: 14 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of snow before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.

    Low: 31 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 64. East wind 5 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 22 mph.
Tonight
Increasing clouds, with a low around 56. South wind 10 to 14 mph, with gusts as high as 25 mph.
Sunday
A chance of rain and thunderstorms, then rain after 1pm. High near 68. Breezy, with a south wind 18 to 21 mph, with gusts as high as 38 mph. Chance of precipitation is 90%.
Sunday Night
Rain before 10pm, then rain and snow between 10pm and 1am, then a chance of snow after 1am. Low around 21. Blustery, with a southwest wind 18 to 24 mph becoming northwest after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Monday
A 20 percent chance of snow before 1pm. Mostly cloudy, with a high near 28. Blustery, with a northwest wind 18 to 23 mph, with gusts as high as 39 mph.
Monday Night
Mostly clear, with a low around 14.
Tuesday
Mostly sunny, with a high near 37.
Tuesday Night
A slight chance of snow before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 41.
Thursday
Sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 48.
Friday
Sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Louis MO
 38.62°N 90.26°W (Elev. 486 ft)
Last Update:
4:41 am CDT Mar 14, 2026
Forecast Valid:
5am CDT Mar 14, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation