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

43°F

6°C

Humidity 74%
Wind Speed Calm
Barometer 30.02 in (1016.6 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 10 Nov 11:53 pm CST
Extended Forecast for

Monticello IL

  • Overnight

    Overnight: Increasing clouds, with a low around 41. Light south southeast wind.

    Low: 41 °F

    Increasing
    Clouds

  • Veterans Day

    Veterans Day: A slight chance of showers before noon, then a chance of showers and thunderstorms between noon and 5pm. Increasing clouds, with a high near 63. South wind 5 to 10 mph becoming west northwest 11 to 16 mph in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 50%.

    High: 63 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 39. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 39 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 47. North northwest wind 11 to 18 mph, with gusts as high as 24 mph.

    High: 47 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. North northwest wind 9 to 14 mph, with gusts as high as 20 mph.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 43. North northwest wind 10 to 14 mph, with gusts as high as 18 mph.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24. Northwest wind 3 to 8 mph.

    Low: 24 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Overnight
Increasing clouds, with a low around 41. Light south southeast wind.
Veterans Day
A slight chance of showers before noon, then a chance of showers and thunderstorms between noon and 5pm. Increasing clouds, with a high near 63. South wind 5 to 10 mph becoming west northwest 11 to 16 mph in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 50%.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 39. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Partly sunny, with a high near 47. North northwest wind 11 to 18 mph, with gusts as high as 24 mph.
Thursday Night
Mostly clear, with a low around 29. North northwest wind 9 to 14 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 43. North northwest wind 10 to 14 mph, with gusts as high as 18 mph.
Friday Night
Mostly clear, with a low around 24. Northwest wind 3 to 8 mph.
Saturday
Sunny, with a high near 46.
Saturday Night
Mostly clear, with a low around 26.
Sunday
Sunny, with a high near 49.
Sunday Night
Partly cloudy, with a low around 30.
Monday
Mostly sunny, with a high near 52.
Monday Night
Mostly clear, with a low around 31.
Tuesday
Sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Monticello IL
 40.03°N 88.58°W (Elev. 650 ft)
Last Update:
10:41 pm CST Nov 10, 2026
Forecast Valid:
12am CST Nov 11, 2026-6pm CST Nov 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation