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

37°F

3°C

Humidity 28%
Wind Speed S 13 mph
Barometer 30.30 in (1027.3 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 20 Jan 1:51 pm CST
Extended Forecast for

Lambert-St. Louis International Airport MO

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 37. South wind around 11 mph.

    High: 37 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 29. South wind 11 to 14 mph becoming southwest after midnight. Winds could gust as high as 22 mph.

    Low: 29 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 45. West wind 10 to 13 mph, with gusts as high as 22 mph.

    High: 45 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 23. West wind 6 to 10 mph becoming northwest after midnight.

    Low: 23 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 37. Northwest wind 6 to 8 mph.

    High: 37 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 10.

    Low: 10 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 16.

    High: 16 °F

    Cold

  • Friday Night

    Friday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 1.

    Low: 1 °F

    Chance Snow

  • Saturday

    Saturday: A 40 percent chance of snow. Mostly cloudy and cold, with a high near 15.

    High: 15 °F

    Chance Snow

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 37. South wind around 11 mph.
Tonight
Increasing clouds, with a low around 29. South wind 11 to 14 mph becoming southwest after midnight. Winds could gust as high as 22 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 45. West wind 10 to 13 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 23. West wind 6 to 10 mph becoming northwest after midnight.
Thursday
Mostly sunny, with a high near 37. Northwest wind 6 to 8 mph.
Thursday Night
Mostly cloudy, with a low around 10.
Friday
Mostly cloudy and cold, with a high near 16.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 1.
Saturday
A 40 percent chance of snow. Mostly cloudy and cold, with a high near 15.
Saturday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 6.
Sunday
Mostly sunny, with a high near 24.
Sunday Night
Mostly clear, with a low around 7.
Monday
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:
10:51 am CST Jan 20, 2026
Forecast Valid:
2pm CST Jan 20, 2026-6pm CST Jan 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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