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.

Overcast

54°F

12°C

Humidity 77%
Wind Speed SW 13 G 21 mph
Barometer 29.80 in (1009.0 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 4 Nov 11:53 pm CST
Extended Forecast for

Monticello IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 47. Southwest wind around 10 mph, with gusts as high as 18 mph.

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of rain before 4pm, then a slight chance of rain after 5pm. Increasing clouds, with a high near 56. West southwest wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 56 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain, mainly before midnight. Cloudy, with a low around 41. West wind 9 to 14 mph becoming north after midnight. Winds could gust as high as 20 mph.

    Low: 41 °F

    Chance Rain

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 50. North northwest wind 9 to 15 mph, with gusts as high as 22 mph.

    High: 50 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 30. North northwest wind 3 to 8 mph.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 52. Northwest wind 3 to 6 mph.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 30. West wind 3 to 5 mph.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 33.

    Low: 33 °F

    Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 47. Southwest wind around 10 mph, with gusts as high as 18 mph.
Thursday
A slight chance of rain before 4pm, then a slight chance of rain after 5pm. Increasing clouds, with a high near 56. West southwest wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Thursday Night
A 40 percent chance of rain, mainly before midnight. Cloudy, with a low around 41. West wind 9 to 14 mph becoming north after midnight. Winds could gust as high as 20 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 50. North northwest wind 9 to 15 mph, with gusts as high as 22 mph.
Friday Night
Mostly clear, with a low around 30. North northwest wind 3 to 8 mph.
Saturday
Sunny, with a high near 52. Northwest wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 30. West wind 3 to 5 mph.
Sunday
Sunny, with a high near 59.
Sunday Night
Clear, with a low around 33.
Monday
Sunny, with a high near 63.
Monday Night
Clear, with a low around 39.
Tuesday
Sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 37.
Veterans Day
Mostly sunny, with a high near 62.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Monticello IL
 40.03°N 88.58°W (Elev. 650 ft)
Last Update:
12:32 am CST Nov 5, 2026
Forecast Valid:
12am CST Nov 5, 2026-6pm CST Nov 11, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation