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

30°F

-1°C

Humidity 92%
Wind Speed Calm
Barometer 29.97 in (1015.7 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 6 Dec 6:51 am CST
Extended Forecast for

Lambert-St. Louis International Airport MO

  • Today

    Today: Partly sunny, with a high near 45. Calm wind becoming southeast 5 to 8 mph in the afternoon.

    High: 45 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of rain between 10pm and 2am. Mostly cloudy, with a low around 35. Southeast wind around 8 mph becoming south after midnight. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A 20 percent chance of rain before noon. Mostly cloudy, with a temperature falling to around 30 by 5pm. Southwest wind 6 to 14 mph becoming north in the afternoon. Winds could gust as high as 21 mph.

    High: 37 °F⇓

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 19. North wind 7 to 13 mph.

    Low: 19 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 31. North wind around 6 mph becoming light and variable.

    High: 31 °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 49.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of rain before noon. Partly sunny, with a high near 45.

    High: 45 °F

    Slight Chance
    Rain then
    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 45. Calm wind becoming southeast 5 to 8 mph in the afternoon.
Tonight
A slight chance of rain between 10pm and 2am. Mostly cloudy, with a low around 35. Southeast wind around 8 mph becoming south after midnight. Chance of precipitation is 20%.
Sunday
A 20 percent chance of rain before noon. Mostly cloudy, with a temperature falling to around 30 by 5pm. Southwest wind 6 to 14 mph becoming north in the afternoon. Winds could gust as high as 21 mph.
Sunday Night
Mostly cloudy, with a low around 19. North wind 7 to 13 mph.
Monday
Mostly sunny, with a high near 31. North wind around 6 mph becoming light and variable.
Monday Night
Partly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
A 20 percent chance of rain before noon. Partly sunny, with a high near 45.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
A slight chance of rain and snow. Mostly cloudy, with a high near 37. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 23.
Friday
Mostly sunny, with a high near 29.
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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:
6:16 am CST Dec 6, 2025
Forecast Valid:
7am CST Dec 6, 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