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

84°F

29°C

Humidity 61%
Wind Speed S 6 mph
Barometer 29.88 in (1010.8 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 13 Oct 8:54 pm CDT
Extended Forecast for

Chesterfield MO

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 4am. Increasing clouds, with a low around 72. South wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 60%.

    Low: 72 °F

    Clear then
    T-storms
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Patchy fog between 9am and 10am. High near 77. Northwest wind around 5 mph becoming calm. Chance of precipitation is 90%.

    High: 77 °F

    T-storms and
    Patchy Fog
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Patchy fog between 1am and 3am. Otherwise, mostly cloudy, with a low around 68. East wind around 6 mph. Chance of precipitation is 70%.

    Low: 68 °F

    Slight Chance
    T-storms then
    Showers
    Likely and
    Patchy Fog

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 83. East wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 90%.

    High: 83 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 49. Northwest wind 7 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.

    Low: 49 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly after 4am. Increasing clouds, with a low around 72. South wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Patchy fog between 9am and 10am. High near 77. Northwest wind around 5 mph becoming calm. Chance of precipitation is 90%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Patchy fog between 1am and 3am. Otherwise, mostly cloudy, with a low around 68. East wind around 6 mph. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm. High near 83. East wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 90%.
Thursday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 49. Northwest wind 7 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.
Friday
Mostly sunny, with a high near 61.
Friday Night
Mostly clear, with a low around 39.
Saturday
Sunny, with a high near 63.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Sunny, with a high near 71.
Sunday Night
Partly cloudy, with a low around 47.
Monday
Mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chesterfield MO
 38.65°N 90.57°W (Elev. 512 ft)
Last Update:
9:06 pm CDT Oct 13, 2026
Forecast Valid:
9pm CDT Oct 13, 2026-6pm CDT Oct 20, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation