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

75°F

24°C

Humidity 37%
Wind Speed S 13 mph
Barometer 30.16 in (1021.2 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 28 Oct 4:53 pm CDT
Extended Forecast for

Monticello IL

  • Tonight

    Tonight: Mostly clear, with a low around 55. South southwest wind 8 to 10 mph, with gusts as high as 17 mph.

    Low: 55 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 78. South southwest wind 9 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 78 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49. North wind 6 to 8 mph.

    Low: 49 °F

    Partly Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 73. East wind around 9 mph.

    High: 73 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 52. East southeast wind around 8 mph.

    Low: 52 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 72. East southeast wind around 7 mph.

    High: 72 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 53. East southeast wind 5 to 7 mph.

    Low: 53 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers. Mostly cloudy, with a high near 69.

    High: 69 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 55. South southwest wind 8 to 10 mph, with gusts as high as 17 mph.
Thursday
Increasing clouds, with a high near 78. South southwest wind 9 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 49. North wind 6 to 8 mph.
Friday
Increasing clouds, with a high near 73. East wind around 9 mph.
Friday Night
Mostly cloudy, with a low around 52. East southeast wind around 8 mph.
Saturday
A 30 percent chance of showers before 1pm. Mostly cloudy, with a high near 72. East southeast wind around 7 mph.
Saturday Night
Mostly cloudy, with a low around 53. East southeast wind 5 to 7 mph.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 69.
Sunday Night
Mostly cloudy, with a low around 52.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 69.
Monday Night
A chance of showers. Mostly cloudy, with a low around 55.
Tuesday
A chance of showers. Partly sunny, with a high near 72. Breezy.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 54.
Wednesday
Showers likely. Partly sunny, with a high near 69.
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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:
1:26 pm CDT Oct 28, 2026
Forecast Valid:
5pm CDT Oct 28, 2026-6pm CST Nov 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation