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.

A Few Clouds

78°F

26°C

Humidity 79%
Wind Speed NW 6 mph
Barometer 29.99 in (1014.5 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 13 Aug 8:51 am CDT
Extended Forecast for

Lambert-St. Louis International Airport MO

  • Today

    Today: Mostly sunny, with a high near 87. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 68. North wind around 6 mph becoming calm in the evening.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Patchy fog before 8am. Otherwise, sunny, with a high near 87. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 87 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 71. East wind around 5 mph becoming calm in the evening.

    Low: 71 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 94. Southeast wind 3 to 6 mph.

    High: 94 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 96.

    High: 96 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 87. Calm wind becoming northwest around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 68. North wind around 6 mph becoming calm in the evening.
Thursday
Patchy fog before 8am. Otherwise, sunny, with a high near 87. Calm wind becoming northeast around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 71. East wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 94. Southeast wind 3 to 6 mph.
Friday Night
Mostly clear, with a low around 75.
Saturday
Sunny and hot, with a high near 97.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Mostly sunny, with a high near 96.
Sunday Night
Partly cloudy, with a low around 76.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Monday Night
Partly cloudy, with a low around 74.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
Lambert-St. Louis International Airport MO
 38.78°N 90.37°W (Elev. 587 ft)
Last Update:
6:16 am CDT Aug 13, 2025
Forecast Valid:
9am CDT Aug 13, 2025-6pm CDT Aug 19, 2025
 
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Additional Resources

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation