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

76°F

24°C

Humidity 91%
Wind Speed W 6 mph
Barometer 29.62 in (1002.0 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 18 Jun 12:54 am CDT
Extended Forecast for

Chesterfield MO

  • Overnight

    Overnight: Partly cloudy, with a low around 69. West wind 5 to 8 mph.

    Low: 69 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers between 3pm and 4pm. Increasing clouds, with a high near 81. Northwest wind 3 to 8 mph.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60. Northwest wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 85. Calm wind.

    High: 85 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 86.

    High: 86 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

  • Sunday

    Sunday: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 85. Chance of precipitation is 80%.

    High: 85 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 66. Chance of precipitation is 80%.

    Low: 66 °F

    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 69. West wind 5 to 8 mph.
Thursday
A 20 percent chance of showers between 3pm and 4pm. Increasing clouds, with a high near 81. Northwest wind 3 to 8 mph.
Thursday Night
Partly cloudy, with a low around 60. Northwest wind around 5 mph becoming calm in the evening.
Juneteenth
Mostly sunny, with a high near 85. Calm wind.
Friday Night
Partly cloudy, with a low around 65. Calm wind.
Saturday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 86.
Saturday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Sunday
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 85. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 66. Chance of precipitation is 80%.
Monday
Partly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chesterfield MO
 38.67°N 90.57°W (Elev. 446 ft)
Last Update:
10:31 pm CDT Jun 17, 2026
Forecast Valid:
1am CDT Jun 18, 2026-6pm CDT Jun 24, 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