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

77°F

25°C

Humidity 96%
Wind Speed E 3 mph
Barometer 30.08 in
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 15 Aug 1:35 am CDT
Extended Forecast for

Sumner IL

Heat Advisory August 15, 01:55am until August 16, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 15, 01:55am until August 16, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • Overnight

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers between 9am and 11am. Mostly sunny, with a high near 94. Heat index values as high as 107. South wind 5 to 8 mph becoming west in the morning. Chance of precipitation is 20%.

    High: 94 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. South southwest wind 5 to 8 mph.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 94. Heat index values as high as 107. West wind 6 to 10 mph, with gusts as high as 15 mph.

    High: 94 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 72. North northwest wind 3 to 7 mph. Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 86. North northwest wind 5 to 8 mph.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65. North wind around 6 mph becoming calm in the evening.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 75. South southeast wind around 5 mph.
Saturday
A slight chance of showers between 9am and 11am. Mostly sunny, with a high near 94. Heat index values as high as 107. South wind 5 to 8 mph becoming west in the morning. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 77. South southwest wind 5 to 8 mph.
Sunday
Mostly sunny, with a high near 94. Heat index values as high as 107. West wind 6 to 10 mph, with gusts as high as 15 mph.
Sunday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 72. North northwest wind 3 to 7 mph. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 86. North northwest wind 5 to 8 mph.
Monday Night
Partly cloudy, with a low around 65. North wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 67.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sumner IL
 38.72°N 87.87°W (Elev. 479 ft)
Last Update:
1:46 am CDT Aug 15, 2026
Forecast Valid:
1am CDT Aug 15, 2026-6pm CDT Aug 21, 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