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

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

37°F

3°C

Humidity 93%
Wind Speed E 3 mph
Barometer 29.91 in (1013.0 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 17 Feb 5:54 am CST
Extended Forecast for

Chesterfield MO

  • Today

    Today: Mostly cloudy, with a high near 63. South wind 5 to 14 mph, with gusts as high as 26 mph.

    High: 63 °F

    Mostly Cloudy

  • Tonight

    Tonight: A slight chance of rain between midnight and 3am. Cloudy during the early evening, then gradual clearing, with a low around 54. South wind 14 to 18 mph becoming southwest after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 20%.

    Low: 54 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Sunny, with a high near 75. West wind 5 to 13 mph, with gusts as high as 23 mph.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50. South wind 3 to 5 mph.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon. Sunny, with a high near 74. South wind 6 to 14 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%.

    High: 74 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Clear, with a low around 37.

    Low: 37 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow. Mostly sunny, with a high near 46.

    High: 46 °F

    Chance Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 63. South wind 5 to 14 mph, with gusts as high as 26 mph.
Tonight
A slight chance of rain between midnight and 3am. Cloudy during the early evening, then gradual clearing, with a low around 54. South wind 14 to 18 mph becoming southwest after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 75. West wind 5 to 13 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 50. South wind 3 to 5 mph.
Thursday
A chance of showers, with thunderstorms also possible after noon. Sunny, with a high near 74. South wind 6 to 14 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%.
Thursday Night
Clear, with a low around 37.
Friday
Sunny, with a high near 51.
Friday Night
Partly cloudy, with a low around 31.
Saturday
A 30 percent chance of snow. Mostly sunny, with a high near 46.
Saturday Night
A 20 percent chance of snow before midnight. Mostly clear, with a low around 26.
Sunday
Sunny, with a high near 41.
Sunday Night
Mostly clear, with a low around 19.
Monday
Sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chesterfield MO
 38.65°N 90.6°W (Elev. 466 ft)
Last Update:
5:01 am CST Feb 17, 2026
Forecast Valid:
6am 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