Severe Weather and Heavy Rain from the Ohio Valley to the Mid-Atlantic; Heat Persists in the South-Central U.S.

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected across portions of the Ohio Valley into southern Mid-Atlantic and Carolinas. Rounds of strong thunderstorms are expected to develop across the northern and central Plains. Sweltering heat remains most persistent across the South-Central Plains and Lower/Middle Mississippi Valley through next week. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

82°F

28°C

Humidity 79%
Wind Speed N 5 mph
Barometer 29.89 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 5 Sep 6:45 pm CDT
Extended Forecast for

3 Miles ESE Edwardsville IL

Extreme Heat Warning September 5, 07:24pm until September 5, 08:00pm
Click here for hazard details and duration
...
  •  
    Extreme Heat Warning September 5, 07:24pm until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Tonight

    Low: 71 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 90. Northeast wind 6 to 10 mph.

    High: 90 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64. East wind 6 to 8 mph.

    Low: 64 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 89. East wind 5 to 7 mph.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64. East wind 3 to 6 mph.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 99.

    High: 99 °F

    Hot

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. Northeast wind around 6 mph.
Sunday
Mostly sunny, with a high near 90. Northeast wind 6 to 10 mph.
Sunday Night
Mostly clear, with a low around 64. East wind 6 to 8 mph.
Labor Day
Sunny, with a high near 89. East wind 5 to 7 mph.
Monday Night
Mostly clear, with a low around 64. East wind 3 to 6 mph.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71.
Thursday
A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 64.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 87.
Friday Night
A 30 percent chance of showers. Partly cloudy, with a low around 64.
Saturday
A 20 percent chance of showers. Sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Edwardsville IL
 38.79°N 89.91°W (Elev. 554 ft)
5:51 pm CDT Sep 5, 2026
7pm CDT Sep 5, 2026-6pm CDT Sep 12, 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