Heavy Great Lakes Snow through Friday; Watching Potential for Major Winter Storm Late Week into this Weekend

Heavy lake effect snow will continue in the Great Lakes into Wednesday before another storm brings a widespread general snow followed by another round of heavy lake effect snow. A wide-ranging winter storm will produce great swaths of heavy snow, sleet, and treacherous freezing rain from the southern Rockies/Plains and Mid-South starting Friday and shifting toward the East Coast through Sunday. Read More >

Current conditions at

Clinton Municipal Airport (KCWI)

Lat: 41.83°NLon: 90.33°WElev: 696ft.

Overcast

21°F

-6°C

Humidity 68%
Wind Speed E 6 mph
Barometer 30.16 in (1023.4 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 20 Jan 6:56 pm CST
Extended Forecast for

Thomson IL

Winter Weather Advisory until January 21, 06:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until January 21, 06:00am

    NOW until 6:00am Wed

    Winter Weather Advisory

  • Tonight

    Low: 17 °F

    Snow

  • Wednesday

    Wednesday: A chance of flurries between 3pm and 4pm, then a chance of snow after 4pm.  Partly sunny, with a high near 29. Northwest wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.  Chance of precipitation is 40%.

    High: 29 °F

    Partly Sunny
    then Chance
    Snow

  • Wednesday Night

    Wednesday Night: A chance of snow before 11pm, then a chance of flurries between 11pm and midnight.  Mostly cloudy, then gradually becoming mostly clear, with a low around 10. Wind chill values as low as -5. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 40%.

    Low: 10 °F

    Chance Snow
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 20. Wind chill values as low as -5. West wind 10 to 15 mph.

    High: 20 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -10.

    Low: -10 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -3.

    High: -3 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -11.

    Low: -11 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy and cold, with a high near 5.

    High: 5 °F

    Cold

Detailed Forecast

Tonight
Snow, mainly before 5am. Low around 17. Southeast wind around 5 mph becoming northwest after midnight. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 3 inches possible.
Wednesday
A chance of flurries between 3pm and 4pm, then a chance of snow after 4pm. Partly sunny, with a high near 29. Northwest wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 40%.
Wednesday Night
A chance of snow before 11pm, then a chance of flurries between 11pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 10. Wind chill values as low as -5. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Thursday
Mostly sunny, with a high near 20. Wind chill values as low as -5. West wind 10 to 15 mph.
Thursday Night
Partly cloudy, with a low around -10.
Friday
Mostly sunny and cold, with a high near -3.
Friday Night
Mostly cloudy, with a low around -11.
Saturday
Mostly cloudy and cold, with a high near 5.
Saturday Night
Mostly cloudy, with a low around -3.
Sunday
Partly sunny, with a high near 11.
Sunday Night
Partly cloudy, with a low around -3.
Monday
Mostly sunny, with a high near 16.
Monday Night
Mostly clear, with a low around 4.
Tuesday
Mostly sunny, with a high near 26.
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ABOUT THIS FORECAST

 
Point Forecast:
Thomson IL
 41.96°N 90.1°W (Elev. 607 ft)
4:41 pm CST Jan 20, 2026
7pm CST Jan 20, 2026-6pm CST Jan 27, 2026
 
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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