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.

Overcast

46°F

8°C

Humidity 73%
Wind Speed W 12 mph
Barometer 30.04 in (1017.3 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 7 Mar 5:54 pm CST
Extended Forecast for

Chesterfield MO

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 35. West wind 5 to 9 mph becoming light after midnight.

    Low: 35 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 7am. Otherwise, sunny, with a high near 68. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 68 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 49. Southwest wind around 8 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 80. Southwest wind 7 to 11 mph, with gusts as high as 22 mph.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after midnight. Mostly clear, with a low around 61. South wind 7 to 9 mph.

    Low: 61 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 9am, then a chance of showers between 9am and noon, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 83. Chance of precipitation is 60%.

    High: 83 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 50. Chance of precipitation is 90%.

    Low: 50 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before noon, then showers likely. High near 66. Chance of precipitation is 90%.

    High: 66 °F

    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before midnight. Mostly clear, with a low around 33.

    Low: 33 °F

    Slight Chance
    Showers then
    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 4am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 35. West wind 5 to 9 mph becoming light after midnight.
Sunday
Patchy fog before 7am. Otherwise, sunny, with a high near 68. Light southwest wind increasing to 5 to 10 mph in the morning.
Sunday Night
Clear, with a low around 49. Southwest wind around 8 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 80. Southwest wind 7 to 11 mph, with gusts as high as 22 mph.
Monday Night
A 20 percent chance of showers after midnight. Mostly clear, with a low around 61. South wind 7 to 9 mph.
Tuesday
A chance of showers and thunderstorms before 9am, then a chance of showers between 9am and noon, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 83. Chance of precipitation is 60%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 50. Chance of precipitation is 90%.
Wednesday
Showers and possibly a thunderstorm before noon, then showers likely. High near 66. Chance of precipitation is 90%.
Wednesday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 33.
Thursday
Sunny, with a high near 55.
Thursday Night
Mostly cloudy, with a low around 42.
Friday
Partly sunny, with a high near 68.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Mostly cloudy, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chesterfield MO
 38.65°N 90.6°W (Elev. 466 ft)
Last Update:
5:01 pm CST Mar 7, 2026
Forecast Valid:
6pm CST Mar 7, 2026-6pm CDT Mar 14, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation