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.

Fair

70°F

21°C

Humidity 61%
Wind Speed SW 7 mph
Barometer 29.72 in (1005.1 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 22 Mar 1:51 am CDT
Extended Forecast for

Lambert-St. Louis International Airport MO

  • Overnight

    Overnight: Clear, with a low around 66. Southwest wind around 9 mph, with gusts as high as 20 mph.

    Low: 66 °F

    Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 88. Southwest wind 9 to 16 mph becoming north in the afternoon.

    High: 88 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 37. Breezy, with a north wind 13 to 22 mph, with gusts as high as 37 mph.

    Low: 37 °F

    Slight Chance
    T-storms and
    Breezy then
    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 56. Northeast wind around 10 mph.

    High: 56 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 39. East wind around 7 mph.

    Low: 39 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain and thunderstorms. Partly cloudy, with a low around 61.

    Low: 61 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Clear, with a low around 66. Southwest wind around 9 mph, with gusts as high as 20 mph.
Sunday
Increasing clouds, with a high near 88. Southwest wind 9 to 16 mph becoming north in the afternoon.
Sunday Night
A 20 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 37. Breezy, with a north wind 13 to 22 mph, with gusts as high as 37 mph.
Monday
Mostly sunny, with a high near 56. Northeast wind around 10 mph.
Monday Night
Mostly cloudy, with a low around 39. East wind around 7 mph.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Mostly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 77.
Wednesday Night
A 20 percent chance of rain and thunderstorms. Partly cloudy, with a low around 61.
Thursday
A 20 percent chance of rain and thunderstorms after 1pm. Sunny, with a high near 89.
Thursday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 44.
Friday
A 40 percent chance of rain. Mostly cloudy, with a high near 54.
Friday Night
A 20 percent chance of rain. Partly cloudy, with a low around 35.
Saturday
Mostly sunny, with a high near 57.
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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:
1:26 am CDT Mar 22, 2026
Forecast Valid:
2am CDT Mar 22, 2026-6pm CDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

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