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

56°F

13°C

Humidity 72%
Wind Speed SE 18 G 25 mph
Barometer 29.82 in (1009.9 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 17 Feb 12:51 pm CST
Extended Forecast for

Saint Louis MO

  • This Afternoon

    This Afternoon: Cloudy, with a steady temperature around 56. South wind 9 to 14 mph, with gusts as high as 24 mph.

    High: 56 °F

    Cloudy

  • Tonight

    Tonight: A slight chance of showers between 1am and 3am. Cloudy, then gradually becoming partly cloudy, with a low around 55. South wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    Low: 55 °F

    Cloudy then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 73. West wind 6 to 10 mph, with gusts as high as 22 mph.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. South wind 3 to 6 mph.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 72. South wind 6 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 40%.

    High: 72 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of snow. Mostly sunny, with a high near 44.

    High: 44 °F

    Chance Snow

Detailed Forecast

This Afternoon
Cloudy, with a steady temperature around 56. South wind 9 to 14 mph, with gusts as high as 24 mph.
Tonight
A slight chance of showers between 1am and 3am. Cloudy, then gradually becoming partly cloudy, with a low around 55. South wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 73. West wind 6 to 10 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 51. South wind 3 to 6 mph.
Thursday
A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 72. South wind 6 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 40%.
Thursday Night
Mostly clear, with a low around 38.
Friday
Sunny, with a high near 52.
Friday Night
Partly cloudy, with a low around 32.
Saturday
A 40 percent chance of snow. Mostly sunny, with a high near 44.
Saturday Night
A 30 percent chance of snow, mainly before midnight. Partly cloudy, with a low around 27.
Sunday
A 20 percent chance of snow. Sunny, with a high near 39.
Sunday Night
Mostly clear, with a low around 21.
Monday
Sunny, with a high near 39.
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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:
1:36 pm CST Feb 17, 2026
Forecast Valid:
1pm CST Feb 17, 2026-6pm CST Feb 23, 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