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Hazardous Weather Conditions

Current conditions at

University of Illinois - Willard (KCMI)

Lat: 40.03°NLon: 88.28°WElev: 741ft.

Fair

80°F

27°C

Humidity 71%
Wind Speed S 7 mph
Barometer 29.98 in (1014.5 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 31 Aug 7:53 pm CDT
Extended Forecast for

Monticello IL

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

    NOW until 7:00pm Thu

    Heat Advisory

  • Tonight

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 96. Heat index values as high as 103. West southwest wind 7 to 9 mph, with gusts as high as 18 mph.

    High: 96 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 76. South wind 5 to 8 mph.

    Low: 76 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. Heat index values as high as 104. Southwest wind 8 to 10 mph, with gusts as high as 15 mph.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. South southwest wind 6 to 8 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 96. West southwest wind 7 to 9 mph.

    High: 96 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. South wind 5 to 7 mph.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 74. South southwest wind around 8 mph, with gusts as high as 16 mph.
Tuesday
Sunny and hot, with a high near 96. Heat index values as high as 103. West southwest wind 7 to 9 mph, with gusts as high as 18 mph.
Tuesday Night
Clear, with a low around 76. South wind 5 to 8 mph.
Wednesday
Sunny and hot, with a high near 97. Heat index values as high as 104. Southwest wind 8 to 10 mph, with gusts as high as 15 mph.
Wednesday Night
Mostly clear, with a low around 76. South southwest wind 6 to 8 mph.
Thursday
Sunny and hot, with a high near 96. West southwest wind 7 to 9 mph.
Thursday Night
Mostly clear, with a low around 75. South wind 5 to 7 mph.
Friday
Sunny, with a high near 92.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny, with a high near 91.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Mostly clear, with a low around 65.
Labor Day
Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Monticello IL
 40.03°N 88.58°W (Elev. 650 ft)
Last Update:
7:36 pm CDT Aug 31, 2026
Forecast Valid:
8pm CDT Aug 31, 2026-6pm CDT Sep 7, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation