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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

91°F

33°C

Humidity 49%
Wind Speed S 7 mph
Barometer 29.97 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 2 Sep 6:52 pm CDT
Extended Forecast for

5 Miles WNW Murphysboro IL

Extreme Heat Warning September 2, 07:28pm until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 2, 07:28pm until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Tonight

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 98. Heat index values as high as 106. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 98 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 75. Calm wind.

    Low: 75 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 99. Heat index values as high as 109. Calm wind.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny and hot, with a high near 97. Calm wind. Chance of precipitation is 20%.

    High: 97 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 95 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 75. Light south southwest wind.
Thursday
Sunny and hot, with a high near 98. Heat index values as high as 106. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 75. Calm wind.
Friday
Sunny and hot, with a high near 99. Heat index values as high as 109. Calm wind.
Friday Night
Mostly clear, with a low around 75. Calm wind.
Saturday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny and hot, with a high near 97. Calm wind. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 72. Calm wind.
Sunday
Sunny, with a high near 95. Calm wind becoming north northeast around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 70. Northeast wind around 5 mph becoming calm in the evening.
Labor Day
Sunny, with a high near 94. Calm wind becoming east southeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 70. Light east southeast wind.
Tuesday
Sunny, with a high near 94. Calm wind becoming south southwest around 6 mph in the morning.
Tuesday Night
Mostly clear, with a low around 73. South wind 3 to 5 mph.
Wednesday
Sunny, with a high near 95. Southwest wind 6 to 9 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WNW Murphysboro IL
 37.8°N 89.42°W
Last Update:
7:11 pm CDT Sep 2, 2026
Forecast Valid:
7pm CDT Sep 2, 2026-6pm CDT Sep 9, 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