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

University of Illinois - Willard (KCMI)

Lat: 40.03°NLon: 88.28°WElev: 741ft.

Fair

72°F

22°C

Humidity 57%
Wind Speed S 15 mph
Barometer 29.91 in (1012.6 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 14 Nov 3:53 pm CST
Extended Forecast for

Monticello IL

  • Tonight

    Tonight: Increasing clouds, with a low around 57. South southwest wind 10 to 14 mph, with gusts as high as 23 mph.

    Low: 57 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 73. Breezy, with a south southwest wind 14 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.

    High: 73 °F

    Decreasing
    Clouds and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 37. North northwest wind 9 to 13 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 54. Northwest wind 7 to 10 mph, with gusts as high as 16 mph.

    High: 54 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 30. Northwest wind 3 to 6 mph.

    Low: 30 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 54. North wind 5 to 9 mph becoming east southeast in the afternoon.

    High: 54 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Rain likely. Mostly cloudy, with a low around 38. East wind 9 to 13 mph, with gusts as high as 16 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Rain Likely

  • Tuesday

    Tuesday: A 30 percent chance of rain before noon. Mostly cloudy, with a high near 50.

    High: 50 °F

    Chance Rain
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 57. South southwest wind 10 to 14 mph, with gusts as high as 23 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 73. Breezy, with a south southwest wind 14 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Mostly clear, with a low around 37. North northwest wind 9 to 13 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 54. Northwest wind 7 to 10 mph, with gusts as high as 16 mph.
Sunday Night
Partly cloudy, with a low around 30. Northwest wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 54. North wind 5 to 9 mph becoming east southeast in the afternoon.
Monday Night
Rain likely. Mostly cloudy, with a low around 38. East wind 9 to 13 mph, with gusts as high as 16 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
A 30 percent chance of rain before noon. Mostly cloudy, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Partly sunny, with a high near 54.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 39.
Thursday
Rain likely. Mostly cloudy, with a high near 58.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 41.
Friday
A chance of rain. Partly sunny, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Monticello IL
 40.05°N 88.58°W (Elev. 650 ft)
Last Update:
4:36 pm CST Nov 14, 2025
Forecast Valid:
4pm CST Nov 14, 2025-6pm CST Nov 21, 2025
 
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Additional Resources

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Chance of Precipitation