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

41°F

5°C

Humidity 89%
Wind Speed S 9 mph
Barometer 30.00 in (1015.9 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 16 Feb 11:53 pm CST
Extended Forecast for

Sidney IL

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 39. South wind around 7 mph, with gusts as high as 16 mph.

    Low: 39 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 58. South wind 7 to 16 mph, with gusts as high as 26 mph.

    High: 58 °F

    Patchy Fog
    then Cloudy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain after midnight. Cloudy, then gradually becoming partly cloudy, with a low around 52. Breezy, with a south wind 15 to 22 mph, with gusts as high as 31 mph.

    Low: 52 °F

    Breezy.
    Cloudy then
    Chance Rain

  • Wednesday

    Wednesday: Sunny, with a high near 68. Breezy, with a west southwest wind 17 to 22 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 68 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 44. Southwest wind 6 to 8 mph becoming southeast after midnight.

    Low: 44 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Rain likely after noon. Partly sunny, with a high near 67. South wind 6 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 67 °F

    Partly Sunny
    then Rain
    Likely

  • Thursday Night

    Thursday Night: Rain likely before midnight. Partly cloudy, with a low around 37. South wind 10 to 18 mph becoming west southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 37 °F

    Rain Likely
    then Mostly
    Clear

  • Friday

    Friday: Partly sunny, with a high near 48. Breezy.

    High: 48 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 39. South wind around 7 mph, with gusts as high as 16 mph.
Tuesday
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 58. South wind 7 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
A 40 percent chance of rain after midnight. Cloudy, then gradually becoming partly cloudy, with a low around 52. Breezy, with a south wind 15 to 22 mph, with gusts as high as 31 mph.
Wednesday
Sunny, with a high near 68. Breezy, with a west southwest wind 17 to 22 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 30 mph.
Wednesday Night
Increasing clouds, with a low around 44. Southwest wind 6 to 8 mph becoming southeast after midnight.
Thursday
Rain likely after noon. Partly sunny, with a high near 67. South wind 6 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain likely before midnight. Partly cloudy, with a low around 37. South wind 10 to 18 mph becoming west southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Partly sunny, with a high near 48. Breezy.
Friday Night
Mostly cloudy, with a low around 28.
Saturday
Partly sunny, with a high near 44.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
Mostly sunny, with a high near 38.
Sunday Night
Mostly clear, with a low around 19.
Monday
Mostly sunny, with a high near 37.
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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:
11:37 pm CST Feb 16, 2026
Forecast Valid:
12am CST Feb 17, 2026-6pm CST Feb 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation