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

42°F

6°C

Humidity 68%
Wind Speed NE 12 mph
Barometer 30.42 in (1030.5 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 7 Apr 7:51 am CDT
Extended Forecast for

Lambert-St. Louis International Airport MO

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 55. East wind 9 to 11 mph.

    High: 55 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Increasing clouds, with a low around 42. East wind around 11 mph.

    Low: 42 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 72. Southeast wind 10 to 16 mph, with gusts as high as 24 mph.

    High: 72 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55. South wind 10 to 14 mph.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 77. South wind around 11 mph.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.

    High: 73 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 75. Chance of precipitation is 30%.

    High: 75 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 55. East wind 9 to 11 mph.
Tonight
Increasing clouds, with a low around 42. East wind around 11 mph.
Wednesday
Partly sunny, with a high near 72. Southeast wind 10 to 16 mph, with gusts as high as 24 mph.
Wednesday Night
Partly cloudy, with a low around 55. South wind 10 to 14 mph.
Thursday
Sunny, with a high near 77. South wind around 11 mph.
Thursday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 58.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 75. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 61.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
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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:
5:21 am CDT Apr 7, 2026
Forecast Valid:
8am CDT Apr 7, 2026-6pm CDT Apr 13, 2026
 
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