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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

Carbondale IL

Extreme Heat Warning August 13, 02:58am until August 16, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 13, 02:58am until August 16, 08:00pm

    NOW until 8:00pm Sun

    Extreme Heat Warning

  • Overnight

    Low: 79 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers before 9am. Mostly sunny and hot, with a high near 97. Heat index values as high as 110. South southwest wind 3 to 7 mph.

    High: 97 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. South wind around 7 mph.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 99. Heat index values as high as 110. Southwest wind around 6 mph.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 77. South wind 3 to 5 mph.

    Low: 77 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. West southwest wind 3 to 6 mph.

    High: 100 °F

    Hot

  • Saturday Night

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

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 101. South southwest wind 5 to 7 mph becoming west in the afternoon.

    High: 101 °F

    Hot

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 79. South wind around 6 mph.
Thursday
A 20 percent chance of showers before 9am. Mostly sunny and hot, with a high near 97. Heat index values as high as 110. South southwest wind 3 to 7 mph.
Thursday Night
Mostly clear, with a low around 77. South wind around 7 mph.
Friday
Sunny and hot, with a high near 99. Heat index values as high as 110. Southwest wind around 6 mph.
Friday Night
Mostly clear, with a low around 77. South wind 3 to 5 mph.
Saturday
Sunny and hot, with a high near 100. West southwest wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 77. South wind around 6 mph.
Sunday
Sunny and hot, with a high near 101. South southwest wind 5 to 7 mph becoming west in the afternoon.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. South southwest wind around 5 mph becoming calm in the evening.
Monday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. North wind 3 to 7 mph.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 70. North wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 90. Light north northeast wind.
Tuesday Night
Mostly clear, with a low around 71. Calm wind.
Wednesday
Mostly sunny, with a high near 94. Calm wind becoming south southwest 5 to 7 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
Last Update:
2:46 am CDT Aug 13, 2026
Forecast Valid:
2am CDT Aug 13, 2026-6pm CDT Aug 19, 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