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

71°F

22°C

Humidity 38%
Wind Speed SW 12 G 24 mph
Barometer 30.08 in (1018.4 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 21 Apr 10:54 am CDT
Extended Forecast for

Chesterfield MO

  • Today

    Today: Sunny, with a high near 81. Southwest wind 13 to 15 mph, with gusts as high as 24 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. Southwest wind 8 to 10 mph.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 79. Southwest wind 6 to 8 mph.

    High: 79 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. South wind around 6 mph.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 83. South wind 7 to 15 mph, with gusts as high as 28 mph.

    High: 83 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.

    Low: 61 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 77. Chance of precipitation is 80%.

    High: 77 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 55. Chance of precipitation is 30%.

    Low: 55 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 81. Southwest wind 13 to 15 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around 57. Southwest wind 8 to 10 mph.
Wednesday
Mostly sunny, with a high near 79. Southwest wind 6 to 8 mph.
Wednesday Night
Mostly clear, with a low around 60. South wind around 6 mph.
Thursday
Mostly sunny, with a high near 83. South wind 7 to 15 mph, with gusts as high as 28 mph.
Thursday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Friday
Showers and possibly a thunderstorm. High near 77. Chance of precipitation is 80%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 55. Chance of precipitation is 30%.
Saturday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 75.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 53.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 74.
Sunday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 75. Chance of precipitation is 60%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chesterfield MO
 38.65°N 90.6°W (Elev. 466 ft)
Last Update:
8:41 am CDT Apr 21, 2026
Forecast Valid:
11am CDT Apr 21, 2026-6pm CDT Apr 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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