National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

84°F

29°C

Humidity 74%
Wind Speed Calm
Barometer 29.94 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 13 Aug 10:52 am CDT
Extended Forecast for

5 Miles NNE Wolf Lake IL

Extreme Heat Warning August 13, 11:32am until August 16, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 13, 11:32am until August 16, 08:00pm

    NOW until 8:00pm Sun

    Extreme Heat Warning

  • Today

    High: 95 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 78. South wind around 7 mph.

    Low: 78 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 99. Heat index values as high as 109. South southwest wind around 7 mph.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 77. South wind around 6 mph.

    Low: 77 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Southwest wind around 6 mph.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. South southwest wind around 6 mph.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 100. West southwest wind around 6 mph.

    High: 100 °F

    Hot

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 76. South wind around 5 mph becoming light and variable.

    Low: 76 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 95. Heat index values as high as 106. South southwest wind 3 to 7 mph.
Tonight
Mostly clear, with a low around 78. South wind around 7 mph.
Friday
Sunny and hot, with a high near 99. Heat index values as high as 109. South southwest wind around 7 mph.
Friday Night
Mostly clear, with a low around 77. South wind around 6 mph.
Saturday
Sunny and hot, with a high near 99. Southwest wind around 6 mph.
Saturday Night
Mostly clear, with a low around 77. South southwest wind around 6 mph.
Sunday
Sunny and hot, with a high near 100. West southwest wind around 6 mph.
Sunday Night
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 76. South wind around 5 mph becoming light and variable.
Monday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. North wind 5 to 7 mph.
Monday Night
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 70. North wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 89. Light northeast wind.
Tuesday Night
Mostly clear, with a low around 72. Light and variable wind.
Wednesday
Mostly sunny, with a high near 93. South southwest wind 3 to 6 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNE Wolf Lake IL
 37.59°N 89.41°W
Last Update:
11:26 am CDT Aug 13, 2026
Forecast Valid:
11am CDT Aug 13, 2026-6pm CDT Aug 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation