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

Hazardous Weather Conditions

Current conditions at

University of Illinois - Willard (KCMI)

Lat: 40.03°NLon: 88.28°WElev: 741ft.

Overcast and Breezy

37°F

3°C

Humidity 86%
Wind Speed W 21 G 36 mph
Barometer 29.49 in (999.1 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 10 Dec 5:53 am CST
Extended Forecast for

Monticello IL

Wind Advisory December 10, 06:27am until December 10, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory December 10, 06:27am until December 10, 12:00pm

    NOW until 12:00pm Wed

    Wind Advisory

  • Today

    High: 38 °F⇓

    Breezy.
    Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Tonight

    Tonight: Cloudy, with a low around 21. Northwest wind 9 to 15 mph, with gusts as high as 20 mph.

    Low: 21 °F

    Cloudy

  • Thursday

    Thursday: A 30 percent chance of snow after 3pm. Mostly cloudy, with a high near 28. West northwest wind 6 to 9 mph becoming south in the afternoon.

    High: 28 °F

    Mostly Cloudy
    then Chance
    Snow

  • Thursday Night

    Thursday Night: Snow. Low around 24. South southeast wind 6 to 9 mph becoming east northeast after midnight. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 24 °F

    Snow then
    Snow Likely

  • Friday

    Friday: Mostly cloudy, with a high near 32. East northeast wind 9 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 32 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 9. West northwest wind 10 to 13 mph, with gusts as high as 17 mph.

    Low: 9 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 50 percent chance of snow. Mostly cloudy, with a high near 17. Northwest wind 8 to 10 mph.

    High: 17 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around -5.

    Low: -5 °F

    Partly Cloudy

Detailed Forecast

Today
A chance of rain and snow showers before 11am, then a chance of snow showers between 11am and 3pm. Cloudy, with a temperature falling to around 30 by 5pm. Breezy, with a northwest wind 17 to 25 mph, with gusts as high as 46 mph. Chance of precipitation is 50%.
Tonight
Cloudy, with a low around 21. Northwest wind 9 to 15 mph, with gusts as high as 20 mph.
Thursday
A 30 percent chance of snow after 3pm. Mostly cloudy, with a high near 28. West northwest wind 6 to 9 mph becoming south in the afternoon.
Thursday Night
Snow. Low around 24. South southeast wind 6 to 9 mph becoming east northeast after midnight. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Friday
Mostly cloudy, with a high near 32. East northeast wind 9 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 9. West northwest wind 10 to 13 mph, with gusts as high as 17 mph.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 17. Northwest wind 8 to 10 mph.
Saturday Night
Partly cloudy, with a low around -5.
Sunday
Sunny and cold, with a high near 8.
Sunday Night
Mostly clear, with a low around -4.
Monday
Mostly sunny, with a high near 25.
Monday Night
Mostly cloudy, with a low around 17.
Tuesday
Partly sunny, with a high near 36.
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:
5:16 am CST Dec 10, 2025
Forecast Valid:
6am CST Dec 10, 2025-6pm CST Dec 16, 2025
 
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