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.

Fair

71°F

22°C

Humidity 90%
Wind Speed S 5 mph
Barometer 29.99 in (1015.2 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 21 Aug 7:53 pm CDT
Extended Forecast for

Sidney IL

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 2am. Increasing clouds, with a low around 65. Calm wind becoming west southwest around 6 mph after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Saturday

    Saturday: Sunny, with a high near 81. Northwest wind 6 to 13 mph, with gusts as high as 20 mph.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59. Northwest wind 5 to 7 mph.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79. North northwest wind 5 to 8 mph, with gusts as high as 15 mph.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. Light and variable wind.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 78. Calm wind.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59. Light east southeast wind.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly before 2am. Increasing clouds, with a low around 65. Calm wind becoming west southwest around 6 mph after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Sunny, with a high near 81. Northwest wind 6 to 13 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 59. Northwest wind 5 to 7 mph.
Sunday
Sunny, with a high near 79. North northwest wind 5 to 8 mph, with gusts as high as 15 mph.
Sunday Night
Partly cloudy, with a low around 56. Light and variable wind.
Monday
Mostly sunny, with a high near 78. Calm wind.
Monday Night
Partly cloudy, with a low around 59. Light east southeast wind.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Partly sunny, with a high near 84.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
Sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 63.
Friday
Mostly sunny, with a high near 84.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sidney IL
 40.03°N 88.07°W (Elev. 653 ft)
Last Update:
7:36 pm CDT Aug 21, 2026
Forecast Valid:
8pm CDT Aug 21, 2026-6pm CDT Aug 28, 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