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

Sparta Community-Hunter Field Airport (KSAR)

Lat: 38.15°NLon: 89.7°WElev: 528ft.

Partly Cloudy

84°F

29°C

Humidity 64%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 5 Sep 7:55 am CDT
Extended Forecast for

Okawville IL

Extreme Heat Warning September 5, 08:18am until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 5, 08:18am until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Today

    High: 99 °F

    Sunny then
    Isolated
    T-storms

  • Tonight

    Tonight: Isolated showers and thunderstorms before 8pm.  Partly cloudy, with a low around 71. Calm wind becoming northeast around 5 mph after midnight.  Chance of precipitation is 20%.

    Low: 71 °F

    Isolated
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 90. Northeast wind 5 to 9 mph.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63. East wind 3 to 7 mph.

    Low: 63 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 89. East wind 3 to 5 mph.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64.

    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

Detailed Forecast

Today
Isolated showers between 3pm and 4pm, then isolated showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 110. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Tonight
Isolated showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 90. Northeast wind 5 to 9 mph.
Sunday Night
Mostly clear, with a low around 63. East wind 3 to 7 mph.
Labor Day
Sunny, with a high near 89. East wind 3 to 5 mph.
Monday Night
Mostly clear, with a low around 64.
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 slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly clear, with a low around 70. Chance of precipitation is 40%.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 64.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 89.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Okawville IL
 38.44°N 89.56°W (Elev. 423 ft)
4:16 am CDT Sep 5, 2026
8am CDT Sep 5, 2026-6pm CDT Sep 11, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database