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 Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

81°F

27°C

Humidity 72%
Wind Speed Vrbl 3 mph
Barometer 29.99 in (1015.0 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 4 Sep 7:53 am CDT
Extended Forecast for

2 Miles NNE Oakville MO

Extreme Heat Warning September 4, 08:44am until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 4, 08:44am until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Today

    High: 100 °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. Calm wind becoming west around 5 mph.

    High: 99 °F

    Hot

  • Saturday Night

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

    Low: 74 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95. Calm wind becoming northeast 5 to 7 mph in the afternoon.

    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

Today
Sunny and hot, with a high near 100. Heat index values as high as 108. Calm wind becoming west 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. Calm wind becoming west around 5 mph.
Saturday Night
Mostly clear, with a low around 74. Calm wind.
Sunday
Sunny, with a high near 95. Calm wind becoming northeast 5 to 7 mph in the afternoon.
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 97.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny and hot, with a high near 100.
Wednesday Night
A 20 percent chance of showers. Mostly clear, with a low around 76.
Thursday
A 20 percent chance of showers. Sunny, with a high near 95.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Oakville MO
 38.47°N 90.3°W (Elev. 541 ft)
8:41 am CDT Sep 4, 2026
8am 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