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Current conditions at

University of Illinois - Willard (KCMI)

Lat: 40.03°NLon: 88.28°WElev: 741ft.

Fair

73°F

23°C

Humidity 59%
Wind Speed Calm
Barometer 30.01 in (1015.9 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 11 Oct 12:53 pm CDT
Extended Forecast for

Monticello IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 82. Light west northwest wind.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 60. South wind 3 to 8 mph.

    Low: 60 °F

    Increasing
    Clouds

  • Columbus Day

    Columbus Day: Sunny, with a high near 89. Southwest wind 7 to 17 mph, with gusts as high as 22 mph.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 71. South southwest wind 11 to 14 mph, with gusts as high as 20 mph.

    Low: 71 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. West southwest wind 13 to 15 mph, with gusts as high as 21 mph.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Increasing clouds, with a low around 67. Southwest wind around 7 mph becoming west northwest after midnight. Chance of precipitation is 50%.

    Low: 67 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers. High near 79. East northeast wind 6 to 8 mph becoming west southwest in the morning. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 79 °F

    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers likely, then showers and possibly a thunderstorm after 1pm. High near 73. Chance of precipitation is 80%.

    High: 73 °F

    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 82. Light west northwest wind.
Tonight
Increasing clouds, with a low around 60. South wind 3 to 8 mph.
Columbus Day
Sunny, with a high near 89. Southwest wind 7 to 17 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 71. South southwest wind 11 to 14 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 89. West southwest wind 13 to 15 mph, with gusts as high as 21 mph.
Tuesday Night
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Increasing clouds, with a low around 67. Southwest wind around 7 mph becoming west northwest after midnight. Chance of precipitation is 50%.
Wednesday
Showers. High near 79. East northeast wind 6 to 8 mph becoming west southwest in the morning. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 58.
Thursday
Showers likely, then showers and possibly a thunderstorm after 1pm. High near 73. Chance of precipitation is 80%.
Thursday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.
Friday
Partly sunny, with a high near 64. Breezy.
Friday Night
Partly cloudy, with a low around 37. Breezy.
Saturday
Sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
Monticello IL
 40.03°N 88.58°W (Elev. 650 ft)
Last Update:
1:26 pm CDT Oct 11, 2026
Forecast Valid:
1pm CDT Oct 11, 2026-6pm CDT Oct 17, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation