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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

2 Miles ESE Grand Tower IL

Extreme Heat Warning September 5, 12:47am until September 5, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 5, 12:47am until September 5, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Overnight

    Low: 76 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Heat index values as high as 110. Light west northwest wind.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 74. Light north wind.

    Low: 74 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 95. North northeast wind 5 to 8 mph.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. East northeast wind 3 to 6 mph.

    Low: 67 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 92. East northeast wind 3 to 5 mph.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 67. Light east wind.

    Low: 67 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. Calm wind becoming south around 5 mph in the afternoon.

    High: 96 °F

    Sunny

Detailed Forecast

Overnight
Clear, with a low around 76. Calm wind.
Saturday
Sunny and hot, with a high near 100. Heat index values as high as 110. Light west northwest wind.
Saturday Night
Partly cloudy, with a low around 74. Light north wind.
Sunday
Sunny, with a high near 95. North northeast wind 5 to 8 mph.
Sunday Night
Mostly clear, with a low around 67. East northeast wind 3 to 6 mph.
Labor Day
Sunny, with a high near 92. East northeast wind 3 to 5 mph.
Monday Night
Clear, with a low around 67. Light east wind.
Tuesday
Sunny, with a high near 96. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Clear, with a low around 73. South southeast wind 3 to 7 mph.
Wednesday
Sunny and hot, with a high near 99. Southwest wind 7 to 9 mph.
Wednesday Night
Mostly clear, with a low around 74. South southwest wind around 6 mph.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 95. West southwest wind 5 to 7 mph becoming northwest in the afternoon.
Thursday Night
Mostly clear, with a low around 68. North northwest wind around 5 mph becoming calm in the evening.
Friday
A slight chance of showers. Sunny, with a high near 92. Calm wind becoming south around 6 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Grand Tower IL
 37.62°N 89.46°W
Last Update:
12:41 am CDT Sep 5, 2026
Forecast Valid:
12am CDT Sep 5, 2026-6pm CDT Sep 11, 2026
 
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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