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

67°F

19°C

Humidity 91%
Wind Speed Calm
Barometer 30.01 in (1015.4 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 19 Jun 11:54 pm CDT
Extended Forecast for

Chesterfield MO

  • Overnight

    Overnight: Mostly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 86. Calm wind.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68. Calm wind becoming southeast around 5 mph after midnight.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers and thunderstorms, mainly after 2pm. High near 84. Southeast wind 7 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%.

    High: 84 °F

    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms, mainly before 1am. Low around 65. West wind around 9 mph becoming northwest after midnight. Chance of precipitation is 90%.

    Low: 65 °F

    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 78.

    High: 78 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 67. Calm wind.
Saturday
Mostly sunny, with a high near 86. Calm wind.
Saturday Night
Partly cloudy, with a low around 68. Calm wind becoming southeast around 5 mph after midnight.
Sunday
Showers and thunderstorms, mainly after 2pm. High near 84. Southeast wind 7 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%.
Sunday Night
Showers and thunderstorms, mainly before 1am. Low around 65. West wind around 9 mph becoming northwest after midnight. Chance of precipitation is 90%.
Monday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chesterfield MO
 38.67°N 90.57°W (Elev. 446 ft)
Last Update:
11:56 pm CDT Jun 19, 2026
Forecast Valid:
12am CDT Jun 20, 2026-6pm CDT Jun 26, 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