Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

A Few Clouds

89°F

32°C

Humidity 57%
Wind Speed W 6 mph
Barometer 29.95 in (1013.1 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 5 Sep 9:54 am CDT
Extended Forecast for

3 Miles WSW Spirit Of St. Louis Airport MO

Extreme Heat Warning September 5, 10:43am until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 5, 10:43am until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Today

    High: 100 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 92. East wind 3 to 7 mph.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64. East wind around 6 mph becoming calm  after midnight.

    Low: 64 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 89. Light east wind.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Today
Sunny and hot, with a high near 100. Heat index values as high as 109. North wind 5 to 7 mph.
Tonight
Partly cloudy, with a low around 71. Calm wind.
Sunday
Sunny, with a high near 92. East wind 3 to 7 mph.
Sunday Night
Mostly clear, with a low around 64. East wind around 6 mph becoming calm after midnight.
Labor Day
Sunny, with a high near 89. Light east wind.
Monday Night
Mostly clear, with a low around 66.
Tuesday
Sunny, with a high near 96.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 71.
Thursday
A 50 percent chance of showers. Mostly sunny, with a high near 90.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Spirit Of St. Louis Airport MO
 38.65°N 90.68°W (Elev. 443 ft)
9:26 am CDT Sep 5, 2026
10am CDT Sep 5, 2026-6pm CDT Sep 11, 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