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

35°F

2°C

Humidity 89%
Wind Speed S 9 mph
Barometer 30.18 in (1022.2 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 2 Nov 11:53 pm CST
Extended Forecast for

Monticello IL

  • Overnight

    Overnight: Mostly clear, with a low around 36. South southwest wind 9 to 11 mph, with gusts as high as 16 mph.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 63. Southwest wind 8 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35. West northwest wind around 6 mph becoming calm in the evening.

    Low: 35 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 67. Breezy, with a light south southeast wind becoming south 15 to 20 mph in the morning. Winds could gust as high as 31 mph.

    High: 67 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 49. South southwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 69. Southwest wind 11 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 69 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 36. North northwest wind 6 to 9 mph becoming east northeast after midnight.

    Low: 36 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of rain after midnight. Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 36. South southwest wind 9 to 11 mph, with gusts as high as 16 mph.
Monday
Sunny, with a high near 63. Southwest wind 8 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.
Monday Night
Partly cloudy, with a low around 35. West northwest wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 67. Breezy, with a light south southeast wind becoming south 15 to 20 mph in the morning. Winds could gust as high as 31 mph.
Tuesday Night
Partly cloudy, with a low around 49. South southwest wind around 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 69. Southwest wind 11 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 36. North northwest wind 6 to 9 mph becoming east northeast after midnight.
Thursday
Mostly sunny, with a high near 62.
Thursday Night
A 50 percent chance of rain after midnight. Mostly cloudy, with a low around 49.
Friday
A 40 percent chance of rain before noon. Partly sunny, with a high near 66. Breezy.
Friday Night
Partly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Monticello IL
 40.05°N 88.55°W (Elev. 650 ft)
Last Update:
11:37 pm CST Nov 2, 2025
Forecast Valid:
12am CST Nov 3, 2025-6pm CST Nov 9, 2025
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation