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

50°F

10°C

Humidity 52%
Wind Speed S 14 mph
Barometer 29.84 in (1010.9 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 9 Dec 11:51 am CST
Extended Forecast for

Lambert-St. Louis International Airport MO

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 52. South wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 52 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of rain between midnight and 3am. Mostly cloudy, with a low around 39. South wind 14 to 17 mph becoming west after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 20%.

    Low: 39 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Partly sunny, with a temperature falling to around 34 by 5pm. Breezy, with a northwest wind 14 to 23 mph, with gusts as high as 46 mph.

    High: 42 °F⇓

    Partly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 26. Northwest wind 5 to 13 mph.

    Low: 26 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 39. West wind 5 to 8 mph becoming east in the afternoon.

    High: 39 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 52. South wind 11 to 14 mph, with gusts as high as 22 mph.
Tonight
A slight chance of rain between midnight and 3am. Mostly cloudy, with a low around 39. South wind 14 to 17 mph becoming west after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a temperature falling to around 34 by 5pm. Breezy, with a northwest wind 14 to 23 mph, with gusts as high as 46 mph.
Wednesday Night
Mostly cloudy, with a low around 26. Northwest wind 5 to 13 mph.
Thursday
Mostly cloudy, with a high near 39. West wind 5 to 8 mph becoming east in the afternoon.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Partly sunny, with a high near 42.
Friday Night
Mostly cloudy, with a low around 17.
Saturday
Partly sunny, with a high near 27.
Saturday Night
Mostly cloudy, with a low around 10.
Sunday
Mostly sunny, with a high near 23.
Sunday Night
Partly cloudy, with a low around 15.
Monday
A chance of rain and snow. Partly sunny, with a high near 37. Chance of precipitation is 30%.
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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:
11:41 am CST Dec 9, 2025
Forecast Valid:
12pm CST Dec 9, 2025-6pm CST Dec 15, 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