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

SULLIVAN (KUUV)

Lat: 38.23°NLon: 91.16°WElev: 933ft.

Fair

N/A

Humidity NA
Wind Speed Calm
Barometer 29.97 in
Dewpoint N/A
Visibility 10.00 mi
Last update 4 Sep 4:55 pm CDT
Extended Forecast for

10 Miles SE Leasburg MO

Extreme Heat Warning September 4, 05:17pm until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 4, 05:17pm until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Tonight

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Isolated showers and thunderstorms between 3pm and 4pm.  Sunny and hot, with a high near 98. Heat index values as high as 106. Calm wind.  Chance of precipitation is 20%.

    High: 98 °F

    Sunny then
    Isolated
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 71. Calm wind.

    Low: 71 °F

    Mostly Clear

  • Sunday

    Sunday: Isolated showers and thunderstorms before 1pm.  Sunny, with a high near 93. Heat index values as high as 102. Calm wind becoming east around 5 mph in the afternoon.  Chance of precipitation is 20%.

    High: 93 °F

    Isolated
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 74. Calm wind.
Saturday
Isolated showers and thunderstorms between 3pm and 4pm. Sunny and hot, with a high near 98. Heat index values as high as 106. Calm wind. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 71. Calm wind.
Sunday
Isolated showers and thunderstorms before 1pm. Sunny, with a high near 93. Heat index values as high as 102. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 65. Calm wind.
Labor Day
Sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 65.
Tuesday
Sunny, with a high near 96.
Tuesday Night
Clear, with a low around 72.
Wednesday
Sunny and hot, with a high near 97.
Wednesday Night
Mostly clear, with a low around 72.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Friday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles SE Leasburg MO
 38°N 91.16°W (Elev. 748 ft)
2:51 pm CDT Sep 4, 2026
5pm CDT Sep 4, 2026-6pm CDT Sep 11, 2026
 
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Additional Resources

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