Heavy Snow from the Midwest into the Great Lakes; Locally Heavy Rain in the Western Gulf Coast

A significant winter storm will produce a broad area of moderate to heavy snow from the Midwest through the western Great Lakes. Significant snow accumulations of 6-12 inches, and locally more than 1 foot, and gusty wind may cause hazardous travel conditions. Thunderstorms, some severe, and showers may produce locally heavy rain and isolated flash flooding along the western Gulf Coast. Read More >

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Light Snow Fog/Mist

30°F

-1°C

Humidity 92%
Wind Speed S 8 mph
Barometer 29.77 in (1009.4 mb)
Dewpoint 28°F (-2°C)
Visibility 3.00 mi
Wind Chill22°F (-6°C)
Last update 29 Nov 10:51 pm CST
Extended Forecast for

Winthrop Harbor IL

Winter Storm Warning November 29, 11:38pm until November 30, 06:00am
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning November 29, 11:38pm until November 30, 06:00am

    NOW until 6:00am Sun

    Winter Storm Warning

  • Tonight

    Low: 30 °F

    Heavy Snow

  • Sunday

    Sunday: Snow showers, mainly before 9am.  High near 33. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Breezy. Snow
    Showers then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 15. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 15 °F

    Partly Cloudy

  • Monday

    Monday: A 50 percent chance of snow after noon.  Mostly cloudy, with a high near 28. West southwest wind 5 to 10 mph.

    High: 28 °F

    Mostly Cloudy
    then Chance
    Snow

  • Monday Night

    Monday Night: Snow likely, mainly before midnight.  Mostly cloudy, with a low around 18. West northwest wind around 5 mph, with gusts as high as 10 mph.  Chance of precipitation is 60%.

    Low: 18 °F

    Snow Likely
    then Chance
    Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of snow after noon.  Cloudy, with a high near 31.

    High: 31 °F

    Cloudy then
    Chance Snow

Detailed Forecast

Tonight
Snow. The snow could be heavy at times. Low around 30. South southeast wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 5 inches possible.
Sunday
Snow showers, mainly before 9am. High near 33. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Sunday Night
Partly cloudy, with a low around 15. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday
A 50 percent chance of snow after noon. Mostly cloudy, with a high near 28. West southwest wind 5 to 10 mph.
Monday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 18. West northwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 60%.
Tuesday
Partly sunny, with a high near 26.
Tuesday Night
Mostly cloudy, with a low around 19.
Wednesday
A chance of snow after noon. Cloudy, with a high near 31.
Wednesday Night
A chance of snow before midnight. Mostly cloudy, with a low around 11.
Thursday
Mostly sunny, with a high near 22.
Thursday Night
Mostly cloudy, with a low around 10.
Friday
A chance of snow. Partly sunny, with a high near 29.
Friday Night
A chance of snow. Mostly cloudy, with a low around 19.
Saturday
A chance of snow. Mostly cloudy, with a high near 32.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.47°N 87.81°W
11:10 pm CST Nov 29, 2025
11pm CST Nov 29, 2025-6pm CST Dec 6, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database