Severe Thunderstorms in the Ohio Valley and Mid-Atlantic; Heat Continuing in the Central U.S.

Widespread strong to severe thunderstorms are expected from the Upper Ohio Valley into the Mid-Atlantic through Friday, with damaging winds as the primary threat. Dangerous heat will continue from the South-Central U.S. to the Midwest, Ohio/Tennessee valleys, and Mid-Atlantic. Widespread Major to Extreme Heat Risk is forecast into the weekend and will confine to the South-Central U.S. by Labor Day Read More >

Current conditions at

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

77°F

25°C

Humidity 79%
Wind Speed Calm
Barometer 29.94 in (1012.8 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 4 Sep 4:54 am CDT
Extended Forecast for

3 Miles SW Weldon Spring Heights MO

Extreme Heat Warning September 4, 05:31am until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 4, 05:31am until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Today

    High: 98 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 99. Heat index values as high as 107. Light and variable wind.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 93. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 93 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

Detailed Forecast

Today
Sunny and hot, with a high near 98. Heat index values as high as 105. Calm wind becoming southwest around 5 mph.
Tonight
Mostly clear, with a low around 74. Calm wind.
Saturday
Mostly sunny and hot, with a high near 99. Heat index values as high as 107. Light and variable wind.
Saturday Night
Mostly clear, with a low around 73. Calm wind.
Sunday
Sunny, with a high near 93. Calm wind becoming northeast around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 69.
Labor Day
Sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 69.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny and hot, with a high near 98.
Wednesday Night
Mostly clear, with a low around 76.
Thursday
A 20 percent chance of showers. Sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Weldon Spring Heights MO
 38.68°N 90.74°W (Elev. 597 ft)
4:31 am CDT Sep 4, 2026
5am CDT Sep 4, 2026-6pm CDT Sep 10, 2026
 
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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