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.

Partly Cloudy

99°F

37°C

Humidity 41%
Wind Speed W 9 mph
Barometer 29.96 in (1013.2 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index108°F (42°C)
Last update 4 Sep 1:54 pm CDT
Extended Forecast for

Valley Park MO

Extreme Heat Warning September 4, 02:30pm until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 4, 02:30pm until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • This Afternoon

    High: 100 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 77. Calm wind.

    Low: 77 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Heat index values as high as 108. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75. Light and variable wind.

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95. Calm wind becoming northeast around 6 mph in the morning.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 100. Heat index values as high as 106. Light west wind.
Tonight
Mostly clear, with a low around 77. Calm wind.
Saturday
Sunny and hot, with a high near 100. Heat index values as high as 108. Calm wind becoming northwest around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 75. Light and variable wind.
Sunday
Sunny, with a high near 95. Calm wind becoming northeast around 6 mph in the morning.
Sunday Night
Mostly clear, with a low around 68.
Labor Day
Sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 68.
Tuesday
Sunny and hot, with a high near 98.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny and hot, with a high near 101.
Wednesday Night
A 20 percent chance of showers. Mostly clear, with a low around 75.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
Valley Park MO
 38.56°N 90.49°W (Elev. 492 ft)
1:41 pm CDT Sep 4, 2026
2pm 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