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

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

16°F

-9°C

Humidity 54%
Wind Speed SW 12 mph
Barometer 30.24 in (1026.9 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill3°F (-16°C)
Last update 20 Jan 3:51 pm CST
Extended Forecast for

2 Miles NNW Winthrop Harbor IL

Extreme Cold Watch January 23, 12:00am until January 24, 12:00pm
Winter Weather Advisory January 20, 09:00pm until January 21, 06:00am
Click here for hazard details and duration
Extreme Cold Watch
Winter Weather Advisory
  • Tonight

    Tonight: Snow, mainly after 11pm.  Low around 14. South wind 5 to 10 mph.  Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 3 inches possible.

    Low: 14 °F

    Snow

  • Wednesday

    Wednesday: Snow likely before 9am, then a slight chance of snow after 5pm.  Mostly cloudy, with a high near 26. West wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 26 °F

    Snow Likely
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: Snow likely, mainly before 9pm.  Mostly cloudy, with a low around 10. Wind chill values between -5 and 5. West wind 10 to 15 mph, with gusts as high as 30 mph.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 10 °F

    Snow Likely
    then Mostly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 18. Wind chill values between -5 and 5. West wind around 15 mph, with gusts as high as 30 mph.

    High: 18 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -10. Northwest wind around 15 mph.

    Low: -10 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of snow before noon.  Mostly sunny and cold, with a high near -3. Northwest wind 10 to 15 mph.

    High: -3 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -9. Northwest wind around 10 mph.

    Low: -9 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow after noon.  Mostly cloudy and cold, with a high near 7. Northwest wind 5 to 10 mph.

    High: 7 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow, mainly after midnight.  Mostly cloudy, with a low around 0.

    Low: 0 °F

    Chance Snow

Detailed Forecast

Tonight
Snow, mainly after 11pm. Low around 14. South wind 5 to 10 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 3 inches possible.
Wednesday
Snow likely before 9am, then a slight chance of snow after 5pm. Mostly cloudy, with a high near 26. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
Snow likely, mainly before 9pm. Mostly cloudy, with a low around 10. Wind chill values between -5 and 5. West wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Thursday
Mostly sunny, with a high near 18. Wind chill values between -5 and 5. West wind around 15 mph, with gusts as high as 30 mph.
Thursday Night
Partly cloudy, with a low around -10. Northwest wind around 15 mph.
Friday
A 20 percent chance of snow before noon. Mostly sunny and cold, with a high near -3. Northwest wind 10 to 15 mph.
Friday Night
Mostly cloudy, with a low around -9. Northwest wind around 10 mph.
Saturday
A 20 percent chance of snow after noon. Mostly cloudy and cold, with a high near 7. Northwest wind 5 to 10 mph.
Saturday Night
A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 0.
Sunday
A 20 percent chance of snow. Partly sunny, with a high near 14.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 0.
Monday
Mostly sunny, with a high near 15.
Monday Night
Partly cloudy, with a low around 5.
Tuesday
Partly sunny, with a high near 23.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Winthrop Harbor IL
 42.52°N 87.84°W (Elev. 623 ft)
4:42 pm CST Jan 20, 2026
4pm 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