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.

Overcast

40°F

4°C

Humidity 86%
Wind Speed S 5 mph
Barometer 30.06 in (1018.7 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 24 Dec 10:51 pm CST
Extended Forecast for

Winthrop Harbor IL

  • Tonight

    Tonight: A slight chance of drizzle before 1am. Patchy fog between midnight and 3am. Otherwise, cloudy, with a low around 37. North wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 37 °F

    Slight Chance
    Drizzle and
    Patchy Fog

  • Christmas Day

    Christmas Day: Cloudy, with a high near 40. Northeast wind around 15 mph, with gusts as high as 20 mph.

    High: 40 °F

    Cloudy

  • Thursday Night

    Thursday Night: Rain after midnight. Low around 37. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Mostly Cloudy
    then Rain

  • Friday

    Friday: Rain likely before noon. Cloudy, with a high near 43. South southeast wind 5 to 10 mph becoming north northwest in the afternoon. Chance of precipitation is 60%.

    High: 43 °F

    Rain Likely
    then Cloudy

  • Friday Night

    Friday Night: Cloudy, with a low around 37. North northwest wind around 5 mph becoming calm.

    Low: 37 °F

    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 44.

    High: 44 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Cloudy, with a low around 39.

    Low: 39 °F

    Cloudy

  • Sunday

    Sunday: A chance of rain after noon. Mostly cloudy, with a high near 40.

    High: 40 °F

    Cloudy then
    Chance Rain

  • Sunday Night

    Sunday Night: A chance of rain and snow before midnight. Mostly cloudy, with a low around 14. Blustery.

    Low: 14 °F

    Blustery.
    Chance
    Rain/Snow
    then Partly
    Cloudy

Detailed Forecast

Tonight
A slight chance of drizzle before 1am. Patchy fog between midnight and 3am. Otherwise, cloudy, with a low around 37. North wind 5 to 10 mph, with gusts as high as 15 mph.
Christmas Day
Cloudy, with a high near 40. Northeast wind around 15 mph, with gusts as high as 20 mph.
Thursday Night
Rain after midnight. Low around 37. Southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain likely before noon. Cloudy, with a high near 43. South southeast wind 5 to 10 mph becoming north northwest in the afternoon. Chance of precipitation is 60%.
Friday Night
Cloudy, with a low around 37. North northwest wind around 5 mph becoming calm.
Saturday
Mostly cloudy, with a high near 44.
Saturday Night
Cloudy, with a low around 39.
Sunday
A chance of rain after noon. Mostly cloudy, with a high near 40.
Sunday Night
A chance of rain and snow before midnight. Mostly cloudy, with a low around 14. Blustery.
Monday
Mostly sunny, with a high near 24. Blustery.
Monday Night
Partly cloudy, with a low around 14.
Tuesday
Partly sunny, with a high near 29.
Tuesday Night
Mostly cloudy, with a low around 18.
Wednesday
Mostly cloudy, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.47°N 87.84°W
Last Update:
9:06 pm CST Dec 24, 2025
Forecast Valid:
11pm CST Dec 24, 2025-6pm CST Dec 31, 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