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

57°F

14°C

Humidity 32%
Wind Speed SE 8 mph
Barometer 30.15 in (1020.9 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 24 Mar 10:54 pm CDT
Extended Forecast for

Chesterfield MO

  • Tonight

    Tonight: Mostly cloudy, with a low around 46. Southeast wind 3 to 6 mph.

    Low: 46 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80. Calm wind becoming southwest 5 to 9 mph in the morning.

    High: 80 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 65. South wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 65 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 91. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Rain, mainly after 1am. Low around 44. Southwest wind 9 to 15 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%.

    Low: 44 °F

    Chance Rain
    then Rain

  • Friday

    Friday: A 40 percent chance of rain before 1pm. Mostly cloudy, with a high near 53.

    High: 53 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 46. Southeast wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 80. Calm wind becoming southwest 5 to 9 mph in the morning.
Wednesday Night
Mostly clear, with a low around 65. South wind 7 to 10 mph, with gusts as high as 21 mph.
Thursday
Sunny, with a high near 91. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Thursday Night
Rain, mainly after 1am. Low around 44. Southwest wind 9 to 15 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%.
Friday
A 40 percent chance of rain before 1pm. Mostly cloudy, with a high near 53.
Friday Night
Mostly clear, with a low around 33.
Saturday
Sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Partly sunny, with a high near 66.
Sunday Night
Mostly cloudy, with a low around 52.
Monday
Mostly sunny, with a high near 81.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 59.
Tuesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 79.
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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:
8:51 pm CDT Mar 24, 2026
Forecast Valid:
11pm CDT Mar 24, 2026-6pm CDT Mar 31, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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