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

51°F

11°C

Humidity 41%
Wind Speed S 14 mph
Barometer 30.42 in (1030.7 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 28 Mar 5:53 pm CDT
Extended Forecast for

Sidney IL

  • Tonight

    Tonight: Increasing clouds, with a low around 37. South wind 7 to 10 mph, with gusts as high as 16 mph.

    Low: 37 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 64. South southwest wind 10 to 17 mph, with gusts as high as 25 mph.

    High: 64 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 52. South wind around 14 mph, with gusts as high as 21 mph.

    Low: 52 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77. Breezy, with a south southwest wind 14 to 21 mph, with gusts as high as 30 mph.

    High: 77 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. Breezy, with a south southwest wind 17 to 22 mph, with gusts as high as 31 mph.

    Low: 62 °F

    Partly Cloudy
    and Breezy

  • Tuesday

    Tuesday: Showers and thunderstorms likely after 1pm. Partly sunny, with a high near 80. Breezy, with a southwest wind 22 to 26 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Breezy.
    Mostly Sunny
    then T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then showers likely. Low around 41. Breezy, with a west southwest wind 16 to 20 mph becoming north after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 41 °F

    T-storms and
    Breezy

  • Wednesday

    Wednesday: A 40 percent chance of showers. Mostly cloudy, with a high near 51. Breezy.

    High: 51 °F

    Chance
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance
    Showers

Detailed Forecast

Tonight
Increasing clouds, with a low around 37. South wind 7 to 10 mph, with gusts as high as 16 mph.
Sunday
Mostly sunny, with a high near 64. South southwest wind 10 to 17 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 52. South wind around 14 mph, with gusts as high as 21 mph.
Monday
Mostly sunny, with a high near 77. Breezy, with a south southwest wind 14 to 21 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 62. Breezy, with a south southwest wind 17 to 22 mph, with gusts as high as 31 mph.
Tuesday
Showers and thunderstorms likely after 1pm. Partly sunny, with a high near 80. Breezy, with a southwest wind 22 to 26 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Low around 41. Breezy, with a west southwest wind 16 to 20 mph becoming north after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 51. Breezy.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 36.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 51. Breezy.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 40.
Friday
A chance of showers. Mostly cloudy, with a high near 66.
Friday Night
A chance of showers. Mostly cloudy, with a low around 51.
Saturday
Showers likely. Mostly cloudy, with a high near 67. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sidney IL
 40.03°N 88.07°W (Elev. 653 ft)
Last Update:
2:57 pm CDT Mar 28, 2026
Forecast Valid:
6pm CDT Mar 28, 2026-6pm CDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation