National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Partly Cloudy

29°F

-2°C

Humidity 56%
Wind Speed SW 14 mph
Barometer 29.76 in (1009.4 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 5 Dec 3:51 pm CST
Extended Forecast for

Winthrop Harbor IL

  • Tonight

    Tonight: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a steady temperature around 27. Southwest wind around 15 mph becoming west northwest after midnight. Winds could gust as high as 30 mph.

    Low: 27 °F

    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 26. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 26 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Snow likely after midnight. Cloudy, with a temperature rising to around 25 by 3am. Calm wind becoming north northwest around 5 mph after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: 22 °F⇑

    Mostly Cloudy
    then Snow
    Likely

  • Sunday

    Sunday: A 50 percent chance of snow, mainly before noon. Partly sunny, with a high near 27. Blustery, with a north northwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 27 °F

    Chance Snow
    then Slight
    Chance Snow
    and Blustery

  • Sunday Night

    Sunday Night: A 30 percent chance of snow showers. Mostly cloudy, with a low around 20. North wind around 10 mph, with gusts as high as 15 mph.

    Low: 20 °F

    Chance Snow
    Showers

  • Monday

    Monday: A 20 percent chance of snow showers before noon. Mostly cloudy, with a high near 26.

    High: 26 °F

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: A 50 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 19.

    Low: 19 °F

    Slight Chance
    Snow then
    Chance Snow

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 37.

    High: 37 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Rain and snow. Cloudy, with a low around 33.

    Low: 33 °F

    Rain/Snow

Detailed Forecast

Tonight
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a steady temperature around 27. Southwest wind around 15 mph becoming west northwest after midnight. Winds could gust as high as 30 mph.
Saturday
Partly sunny, with a high near 26. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
Snow likely after midnight. Cloudy, with a temperature rising to around 25 by 3am. Calm wind becoming north northwest around 5 mph after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Sunday
A 50 percent chance of snow, mainly before noon. Partly sunny, with a high near 27. Blustery, with a north northwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
A 30 percent chance of snow showers. Mostly cloudy, with a low around 20. North wind around 10 mph, with gusts as high as 15 mph.
Monday
A 20 percent chance of snow showers before noon. Mostly cloudy, with a high near 26.
Monday Night
A 50 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 19.
Tuesday
Mostly cloudy, with a high near 37.
Tuesday Night
Rain and snow. Cloudy, with a low around 33.
Wednesday
Snow showers likely, possibly mixed with rain before noon, then a chance of snow showers. Mostly cloudy, with a high near 38.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 18.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 27.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 14.
Friday
Partly sunny, with a high near 21.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.47°N 87.81°W
Last Update:
3:11 pm CST Dec 5, 2025
Forecast Valid:
4pm CST Dec 5, 2025-6pm CST Dec 12, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation