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.

A Few Clouds

62°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 30.08 in (1017.9 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 22 Aug 6:54 am CDT
Extended Forecast for

Chesterfield MO

  • Today

    Today: Patchy fog before 9am. Otherwise, sunny, with a high near 85. Calm wind becoming north around 5 mph in the afternoon.

    High: 85 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 87. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 87 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming clear, with a low around 60. North wind around 6 mph.

    Low: 60 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 80. Northwest wind 3 to 8 mph.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog before 9am. Otherwise, sunny, with a high near 85. Calm wind becoming north around 5 mph in the afternoon.
Tonight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 66. Calm wind.
Saturday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 87. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Saturday Night
Mostly cloudy, then gradually becoming clear, with a low around 60. North wind around 6 mph.
Sunday
Sunny, with a high near 80. Northwest wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 60.
Monday
Mostly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 80.
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 90.54°W (Elev. 600 ft)
Last Update:
5:41 am CDT Aug 22, 2025
Forecast Valid:
7am CDT Aug 22, 2025-6pm CDT Aug 28, 2025
 
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