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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Jonesboro IL

Extreme Heat Warning September 5, 04:21am until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 5, 04:21am until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Today

    High: 100 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 9pm. Partly cloudy, with a low around 73. Light north northeast wind. Chance of precipitation is 30%.

    Low: 73 °F

    Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 93. Northeast wind 5 to 9 mph.

    High: 93 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66. East northeast wind 3 to 7 mph.

    Low: 66 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 91. East northeast wind 3 to 5 mph.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 66. East wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Clear

  • Tuesday

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

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 73. South southeast wind 3 to 6 mph.

    Low: 73 °F

    Mostly Clear

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 100. Heat index values as high as 109. Light and variable wind.
Tonight
A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 9pm. Partly cloudy, with a low around 73. Light north northeast wind. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 93. Northeast wind 5 to 9 mph.
Sunday Night
Mostly clear, with a low around 66. East northeast wind 3 to 7 mph.
Labor Day
Sunny, with a high near 91. East northeast wind 3 to 5 mph.
Monday Night
Mostly clear, with a low around 66. East wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 95. Calm wind becoming south around 6 mph in the morning.
Tuesday Night
Mostly clear, with a low around 73. South southeast wind 3 to 6 mph.
Wednesday
Sunny and hot, with a high near 98. South southwest wind 7 to 10 mph.
Wednesday Night
A slight chance of showers after 1am. Mostly clear, with a low around 72. South southwest wind around 5 mph.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. West wind around 6 mph becoming north in the morning.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 67. Light northeast wind.
Friday
A slight chance of showers and thunderstorms. Sunny, with a high near 91. Calm wind becoming east around 5 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Jonesboro IL
 37.46°N 89.27°W
Last Update:
1:26 am CDT Sep 5, 2026
Forecast Valid:
4am CDT Sep 5, 2026-6pm CDT Sep 11, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation