National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

87°F

31°C

Humidity 35%
Wind Speed Calm
Barometer 29.64 in (1002.5 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 22 Mar 12:51 pm CDT
Extended Forecast for

Saint Louis MO

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 92. Southwest wind 6 to 10 mph becoming northwest.

    High: 92 °F

    Partly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 38. Breezy, with a north wind 10 to 20 mph, with gusts as high as 33 mph.

    Low: 38 °F

    Slight Chance
    T-storms and
    Breezy then
    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 56. Northeast wind 7 to 9 mph.

    High: 56 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 39. East wind around 6 mph.

    Low: 39 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66. Southeast wind 5 to 7 mph.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 47 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.

    Low: 62 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 90.

    High: 90 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Partly sunny, with a high near 92. Southwest wind 6 to 10 mph becoming northwest.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 38. Breezy, with a north wind 10 to 20 mph, with gusts as high as 33 mph.
Monday
Increasing clouds, with a high near 56. Northeast wind 7 to 9 mph.
Monday Night
Mostly cloudy, with a low around 39. East wind around 6 mph.
Tuesday
Mostly sunny, with a high near 66. Southeast wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 47.
Wednesday
Partly sunny, with a high near 77.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 90.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 43.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 55.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 34.
Saturday
Mostly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Louis MO
 38.62°N 90.26°W (Elev. 486 ft)
Last Update:
12:11 pm CDT Mar 22, 2026
Forecast Valid:
1pm CDT Mar 22, 2026-6pm CDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation