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

Hazardous Weather Conditions

Current conditions at

University of Illinois - Willard (KCMI)

Lat: 40.03°NLon: 88.28°WElev: 741ft.

Overcast

75°F

24°C

Humidity 71%
Wind Speed NE 13 mph
Barometer 30.05 in (1017.2 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 14 Oct 4:53 pm CDT
Extended Forecast for

Allerton IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 61. Northeast wind 7 to 9 mph, with gusts as high as 15 mph.

    Low: 61 °F

    Mostly Cloudy

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly before 5pm. Mostly cloudy, with a high near 76. East wind 7 to 9 mph becoming south in the afternoon. Winds could gust as high as 17 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 76 °F

    Showers
    Likely then
    T-storms
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms before 1am, then a chance of showers. Low around 50. Southwest wind 9 to 17 mph becoming west northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 50 °F

    T-storms then
    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 59. Breezy, with a northwest wind around 21 mph, with gusts as high as 31 mph.

    High: 59 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 39. North wind 10 to 16 mph, with gusts as high as 24 mph.

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 59. North wind 5 to 7 mph becoming calm in the afternoon.

    High: 59 °F

    Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 5am. Otherwise, clear, with a low around 35. Light and variable wind.

    Low: 35 °F

    Clear then
    Areas Frost

  • Sunday

    Sunday: Areas of frost before 7am. Otherwise, sunny, with a high near 67.

    High: 67 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 61. Northeast wind 7 to 9 mph, with gusts as high as 15 mph.
Thursday
Showers and thunderstorms likely, mainly before 5pm. Mostly cloudy, with a high near 76. East wind 7 to 9 mph becoming south in the afternoon. Winds could gust as high as 17 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and thunderstorms before 1am, then a chance of showers. Low around 50. Southwest wind 9 to 17 mph becoming west northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 59. Breezy, with a northwest wind around 21 mph, with gusts as high as 31 mph.
Friday Night
Partly cloudy, with a low around 39. North wind 10 to 16 mph, with gusts as high as 24 mph.
Saturday
Sunny, with a high near 59. North wind 5 to 7 mph becoming calm in the afternoon.
Saturday Night
Areas of frost after 5am. Otherwise, clear, with a low around 35. Light and variable wind.
Sunday
Areas of frost before 7am. Otherwise, sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 40.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 77.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Allerton IL
 39.91°N 87.93°W (Elev. 666 ft)
Last Update:
3:36 pm CDT Oct 14, 2026
Forecast Valid:
6pm CDT Oct 14, 2026-6pm CDT Oct 21, 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