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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

93°F

34°C

Humidity 47%
Wind Speed NA
Barometer 30.09 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 31 Aug 11:52 am CDT
Extended Forecast for

Murphysboro IL

Heat Advisory August 31, 12:48pm until September 4, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 31, 12:48pm until September 4, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • This Afternoon

    High: 95 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 75. South wind 3 to 5 mph.

    Low: 75 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99. Heat index values as high as 105. South southwest wind 3 to 6 mph.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 76. Light south wind.

    Low: 76 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 99. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 99 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 77. Light south wind.

    Low: 77 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 99. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 76. Light south wind.

    Low: 76 °F

    Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 95. South southwest wind 5 to 7 mph.
Tonight
Clear, with a low around 75. South wind 3 to 5 mph.
Tuesday
Sunny and hot, with a high near 99. Heat index values as high as 105. South southwest wind 3 to 6 mph.
Tuesday Night
Clear, with a low around 76. Light south wind.
Wednesday
Sunny and hot, with a high near 99. Calm wind becoming southwest 5 to 7 mph in the morning.
Wednesday Night
Clear, with a low around 77. Light south wind.
Thursday
Sunny and hot, with a high near 99. Calm wind becoming southwest 5 to 7 mph in the morning.
Thursday Night
Clear, with a low around 76. Light south wind.
Friday
Sunny and hot, with a high near 98. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 76. Calm wind.
Saturday
Sunny, with a high near 96. Calm wind becoming north northwest around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 73. Calm wind.
Sunday
Mostly sunny, with a high near 93. Calm wind becoming northeast around 6 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Murphysboro IL
 37.77°N 89.34°W
Last Update:
12:26 pm CDT Aug 31, 2026
Forecast Valid:
12pm CDT Aug 31, 2026-6pm CDT Sep 6, 2026
 
Forecast Discussion
 
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Additional Resources

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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