Significant and Catastrophic Flooding in the Pacific Northwest; Very Cold Temperatures in the Northern Plains

The atmospheric river over the Pacific Northwest will begin to subside today, but lingering rainfall will exacerbate ongoing catastrophic major river flooding, and landslides will continue across portions of western Washington and northwest Oregon for several days. Arctic air will plummet southward into the Northern Plains today, bringing cold air in the single digits to the region by Friday. Read More >

Current conditions at

University of Illinois - Willard (KCMI)

Lat: 40.03°NLon: 88.28°WElev: 741ft.

Overcast

26°F

-3°C

Humidity 84%
Wind Speed W 7 mph
Barometer 30.02 in (1017.5 mb)
Dewpoint 22°F (-6°C)
Visibility 7.00 mi
Wind Chill18°F (-8°C)
Last update 11 Dec 7:53 am CST
Extended Forecast for

Sidney IL

Winter Weather Advisory December 11, 03:00pm until December 12, 06:00am
Click here for hazard details and duration
Winter Weather Advisory
  • Today

    Today: A 40 percent chance of snow, mainly after 4pm.  Cloudy, with a high near 28. West wind 5 to 7 mph becoming light and variable  in the afternoon.

    High: 28 °F

    Cloudy then
    Chance Snow

  • Tonight

    Tonight: Snow before midnight, then snow likely, possibly mixed with freezing rain between midnight and 1am, then snow likely after 1am. The snow could be heavy at times.  Low around 25. South southeast wind 5 to 8 mph becoming northeast after midnight.  Chance of precipitation is 100%. Little or no ice accumulation expected.  New snow accumulation of 3 to 5 inches possible.

    Low: 25 °F

    Heavy Snow
    then Wintry
    Mix Likely

  • Friday

    Friday: Mostly cloudy, with a high near 32. Northeast wind 6 to 8 mph becoming west northwest in the afternoon.

    High: 32 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 13. Wind chill values between 4 and 9. West northwest wind 7 to 9 mph, with gusts as high as 15 mph.

    Low: 13 °F

    Mostly Cloudy

  • Saturday

    Saturday: Snow, mainly after noon.  High near 17. Northwest wind around 9 mph.  Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    High: 17 °F

    Chance Snow
    then Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow before midnight.  Mostly cloudy, then gradually becoming mostly clear, with a low around -8. Northwest wind 8 to 10 mph, with gusts as high as 16 mph.

    Low: -8 °F

    Chance Snow
    then Partly
    Cloudy

  • Sunday

    Sunday: Sunny and cold, with a high near 5. Northwest wind 5 to 10 mph, with gusts as high as 16 mph.

    High: 5 °F

    Cold

  • Sunday Night

    Sunday Night: Mostly clear, with a low around -7.

    Low: -7 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 23.

    High: 23 °F

    Mostly Sunny

Detailed Forecast

Today
A 40 percent chance of snow, mainly after 4pm. Cloudy, with a high near 28. West wind 5 to 7 mph becoming light and variable in the afternoon.
Tonight
Snow before midnight, then snow likely, possibly mixed with freezing rain between midnight and 1am, then snow likely after 1am. The snow could be heavy at times. Low around 25. South southeast wind 5 to 8 mph becoming northeast after midnight. Chance of precipitation is 100%. Little or no ice accumulation expected. New snow accumulation of 3 to 5 inches possible.
Friday
Mostly cloudy, with a high near 32. Northeast wind 6 to 8 mph becoming west northwest in the afternoon.
Friday Night
Mostly cloudy, with a low around 13. Wind chill values between 4 and 9. West northwest wind 7 to 9 mph, with gusts as high as 15 mph.
Saturday
Snow, mainly after noon. High near 17. Northwest wind around 9 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Saturday Night
A 30 percent chance of snow before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around -8. Northwest wind 8 to 10 mph, with gusts as high as 16 mph.
Sunday
Sunny and cold, with a high near 5. Northwest wind 5 to 10 mph, with gusts as high as 16 mph.
Sunday Night
Mostly clear, with a low around -7.
Monday
Mostly sunny, with a high near 23.
Monday Night
Partly cloudy, with a low around 12.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
Mostly cloudy, with a high near 40.
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ABOUT THIS FORECAST

 
Point Forecast:
Sidney IL
 40.03°N 88.07°W (Elev. 653 ft)
4:26 am CST Dec 11, 2025
8am CST Dec 11, 2025-6pm CST Dec 17, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database