National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Partly Cloudy

91°F

33°C

Humidity 59%
Wind Speed S 13 G 21 mph
Barometer 29.94 in (1012.8 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 21 Jun 12:54 pm CDT
Extended Forecast for

2 Miles E Chesterfield MO

Extreme Heat Warning until June 24, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning until June 24, 09:00pm

    NOW until 9:00pm Tue

    Extreme Heat Warning

  • This Afternoon

    High: 98 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 77. South wind 6 to 10 mph, with gusts as high as 22 mph.

    Low: 77 °F

    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 97. Heat index values as high as 103. Southwest wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 97 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 77. South wind 6 to 9 mph.

    Low: 77 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 97. Southwest wind around 7 mph.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Partly cloudy, with a low around 76.

    Low: 76 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.

    High: 94 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 75.

    Low: 75 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 98. Heat index values as high as 108. Southwest wind 11 to 13 mph, with gusts as high as 22 mph.
Tonight
Clear, with a low around 77. South wind 6 to 10 mph, with gusts as high as 22 mph.
Sunday
Sunny and hot, with a high near 97. Heat index values as high as 103. Southwest wind 7 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 77. South wind 6 to 9 mph.
Monday
Sunny and hot, with a high near 97. Southwest wind around 7 mph.
Monday Night
Partly cloudy, with a low around 76.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Tuesday Night
Partly cloudy, with a low around 75.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Mostly clear, with a low around 76.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Chesterfield MO
 38.65°N 90.54°W (Elev. 600 ft)
Last Update:
12:07 pm CDT Jun 21, 2025
Forecast Valid:
1pm CDT Jun 21, 2025-6pm CDT Jun 27, 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