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

76°F

24°C

Humidity 94%
Wind Speed Calm
Barometer 29.92 in (1012.2 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 5 Sep 1:54 am CDT
Extended Forecast for

2 Miles SSE Fenton MO

Extreme Heat Warning September 5, 02:04am until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 5, 02:04am until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Overnight

    Low: 75 °F

    Partly Cloudy

  • Saturday

    Saturday: Isolated showers and thunderstorms after 4pm.  Mostly sunny and hot, with a high near 100. Heat index values as high as 110. Calm wind becoming northwest around 5 mph in the afternoon.  Chance of precipitation is 20%.

    High: 100 °F

    Mostly Sunny
    then Isolated
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 72. Light and variable wind.

    Low: 72 °F

    Partly Cloudy

  • Sunday

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

    High: 92 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 64 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 89.

    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

Detailed Forecast

Overnight
Partly cloudy, with a low around 75. Calm wind.
Saturday
Isolated showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 100. Heat index values as high as 110. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 72. Light and variable wind.
Sunday
Mostly sunny, with a high near 92. East wind 3 to 7 mph.
Sunday Night
Mostly clear, with a low around 64. East wind 3 to 6 mph.
Labor Day
Sunny, with a high near 89.
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. Partly cloudy, with a low around 73.
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:
2 Miles SSE Fenton MO
 38.51°N 90.44°W (Elev. 430 ft)
1:26 am CDT Sep 5, 2026
2am 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