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

Hazardous Weather Conditions

Current conditions at

Mount Carmel, Mount Carmel Municipal Airport (KAJG)

Lat: 38.61°NLon: 87.73°WElev: 423ft.

Fair

101°F

38°C

Humidity 30%
Wind Speed S 6 mph
Barometer 30.00 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 1 Sep 4:15 pm CDT
Extended Forecast for

Sumner IL

Heat Advisory September 1, 04:33pm until September 3, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 1, 04:33pm until September 3, 07:00pm

    NOW until 7:00pm Thu

    Heat Advisory

  • Tonight

    Low: 76 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 101. Heat index values as high as 104. Light south southwest wind increasing to 5 to 9 mph in the morning.

    High: 101 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 77. South southwest wind 3 to 7 mph.

    Low: 77 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 101. Heat index values as high as 105. Southwest wind 3 to 8 mph.

    High: 101 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 76. South southwest wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 100. Calm wind becoming west southwest around 6 mph in the morning.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Partly cloudy, with a low around 74. Calm wind.

    Low: 74 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 98.

    High: 98 °F

    Hot

Detailed Forecast

Tonight
Clear, with a low around 76. South wind around 6 mph.
Wednesday
Sunny and hot, with a high near 101. Heat index values as high as 104. Light south southwest wind increasing to 5 to 9 mph in the morning.
Wednesday Night
Clear, with a low around 77. South southwest wind 3 to 7 mph.
Thursday
Sunny and hot, with a high near 101. Heat index values as high as 105. Southwest wind 3 to 8 mph.
Thursday Night
Mostly clear, with a low around 76. South southwest wind around 5 mph becoming calm in the evening.
Friday
Sunny and hot, with a high near 100. Calm wind becoming west southwest around 6 mph in the morning.
Friday Night
Partly cloudy, with a low around 74. Calm wind.
Saturday
Mostly sunny and hot, with a high near 98.
Saturday Night
Partly cloudy, with a low around 71.
Sunday
Mostly sunny, with a high near 93.
Sunday Night
Partly cloudy, with a low around 68.
Labor Day
Mostly sunny, with a high near 90.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sumner IL
 38.71°N 87.84°W (Elev. 499 ft)
Last Update:
1:26 pm CDT Sep 1, 2026
Forecast Valid:
4pm CDT Sep 1, 2026-6pm CDT Sep 8, 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