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

12°F

-11°C

Humidity 51%
Wind Speed W 12 mph
Barometer 30.33 in (1029.9 mb)
Dewpoint -3°F (-19°C)
Visibility 10.00 mi
Wind Chill-2°F (-19°C)
Last update 20 Jan 11:51 am CST
Extended Forecast for

Winthrop Harbor IL

Winter Weather Advisory January 20, 09:00pm until January 21, 06:00am
Click here for hazard details and duration
Winter Weather Advisory
  • This Afternoon

    This Afternoon: Partly sunny, with a high near 18. Wind chill values between zero and 5. West wind around 10 mph.

    High: 18 °F

    Partly Sunny

  • Tonight

    Tonight: Snow, mainly after 10pm.  Temperature rising to around 22 by 5am. South wind around 10 mph.  Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 16 °F

    Snow

  • Wednesday

    Wednesday: A slight chance of snow before 7am, 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 20%.

    High: 26 °F

    Slight Chance
    Snow

  • Wednesday Night

    Wednesday Night: Snow likely, mainly before 9pm.  Mostly cloudy, with a low around 11. Wind chill values between -5 and 5. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 11 °F

    Snow Likely
    then Mostly
    Cloudy and
    Breezy

  • Thursday

    Thursday: Mostly sunny, with a high near 19. West wind around 15 mph, with gusts as high as 30 mph.

    High: 19 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -8. Northwest wind around 15 mph.

    Low: -8 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of snow after noon.  Mostly sunny and cold, with a high near 1. Northwest wind 10 to 15 mph.

    High: 1 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Friday Night

    Friday Night: A 20 percent chance of snow after midnight.  Partly cloudy, with a low around -7. Northwest wind around 10 mph.

    Low: -7 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A 20 percent chance of snow.  Mostly cloudy and cold, with a high near 7.

    High: 7 °F

    Slight Chance
    Snow

Detailed Forecast

This Afternoon
Partly sunny, with a high near 18. Wind chill values between zero and 5. West wind around 10 mph.
Tonight
Snow, mainly after 10pm. Temperature rising to around 22 by 5am. South wind around 10 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Wednesday
A slight chance of snow before 7am, 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 20%.
Wednesday Night
Snow likely, mainly before 9pm. Mostly cloudy, with a low around 11. Wind chill values between -5 and 5. Breezy, with a west wind 15 to 20 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 19. West wind around 15 mph, with gusts as high as 30 mph.
Thursday Night
Partly cloudy, with a low around -8. Northwest wind around 15 mph.
Friday
A 20 percent chance of snow after noon. Mostly sunny and cold, with a high near 1. Northwest wind 10 to 15 mph.
Friday Night
A 20 percent chance of snow after midnight. Partly cloudy, with a low around -7. Northwest wind around 10 mph.
Saturday
A 20 percent chance of snow. Mostly cloudy and cold, with a high near 7.
Saturday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around -1.
Sunday
A 20 percent chance of snow. Mostly sunny, with a high near 17.
Sunday Night
A 20 percent chance of snow. Partly cloudy, with a low around 2.
Monday
Mostly sunny, with a high near 16.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.49°N 87.81°W (Elev. 600 ft)
12:21 pm CST Jan 20, 2026
12pm CST Jan 20, 2026-6pm CST Jan 26, 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