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.

Overcast

41°F

5°C

Humidity 76%
Wind Speed SE 8 mph
Barometer 29.89 in (1012.8 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 6 Dec 9:51 pm CST
Extended Forecast for

Lambert-St. Louis International Airport MO

  • Tonight

    Tonight: A slight chance of rain between midnight and 2am. Cloudy, with a low around 36. South wind 3 to 7 mph. Chance of precipitation is 20%.

    Low: 36 °F

    Cloudy then
    Slight Chance
    Rain

  • Sunday

    Sunday: A slight chance of drizzle before 1pm. Cloudy, with a temperature rising to near 39 by 9am, then falling to around 32 during the remainder of the day. Light and variable wind becoming north 8 to 13 mph in the morning. Winds could gust as high as 22 mph.

    High: 39 °F⇓

    Slight Chance
    Drizzle

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 18. North wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 18 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 32. North wind around 6 mph becoming light and variable.

    High: 32 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. South wind 6 to 10 mph.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 45.

    High: 45 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

Tonight
A slight chance of rain between midnight and 2am. Cloudy, with a low around 36. South wind 3 to 7 mph. Chance of precipitation is 20%.
Sunday
A slight chance of drizzle before 1pm. Cloudy, with a temperature rising to near 39 by 9am, then falling to around 32 during the remainder of the day. Light and variable wind becoming north 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Sunday Night
Mostly cloudy, with a low around 18. North wind 6 to 11 mph, with gusts as high as 20 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 32. North wind around 6 mph becoming light and variable.
Monday Night
Partly cloudy, with a low around 26. South wind 6 to 10 mph.
Tuesday
Mostly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Partly sunny, with a high near 45.
Wednesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 27.
Thursday
A 30 percent chance of snow before noon. Mostly cloudy, with a high near 36.
Thursday Night
Mostly cloudy, with a low around 20.
Friday
Partly sunny, with a high near 26.
Friday Night
Partly cloudy, with a low around 10.
Saturday
Mostly sunny, with a high near 22.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lambert-St. Louis International Airport MO
 38.76°N 90.37°W (Elev. 551 ft)
Last Update:
9:46 pm CST Dec 6, 2025
Forecast Valid:
10pm CST Dec 6, 2025-6pm CST Dec 13, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation