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.

Light Rain Fog/Mist

34°F

1°C

Humidity 92%
Wind Speed S 8 mph
Barometer 29.47 in (999.0 mb)
Dewpoint 32°F (0°C)
Visibility 6.00 mi
Wind Chill27°F (-3°C)
Last update 9 Dec 7:51 pm CST
Extended Forecast for

Winthrop Harbor IL

  • Tonight

    Tonight: Rain before 5am, then snow likely, possibly mixed with rain. Low around 32. Breezy, with a south wind 15 to 20 mph becoming northwest after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 32 °F

    Breezy. Rain
    then
    Rain/Snow
    Likely

  • Wednesday

    Wednesday: Rain and snow, becoming all snow after 7am. Temperature falling to around 26 by 5pm. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 34 °F⇓

    Breezy.
    Rain/Snow
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 13. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 13 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Thursday

    Thursday: Increasing clouds, with a high near 24. West wind 5 to 10 mph.

    High: 24 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 20. West southwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 20 °F

    Chance Snow

  • Friday

    Friday: A 40 percent chance of snow. Mostly cloudy, with a high near 29.

    High: 29 °F

    Chance Snow

  • Friday Night

    Friday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 9.

    Low: 9 °F

    Chance Snow
    then Mostly
    Cloudy

  • Saturday

    Saturday: A chance of snow. Mostly cloudy, with a high near 14.

    High: 14 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A chance of snow before midnight. Mostly cloudy, with a low around 1.

    Low: 1 °F

    Chance Snow
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Rain before 5am, then snow likely, possibly mixed with rain. Low around 32. Breezy, with a south wind 15 to 20 mph becoming northwest after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Wednesday
Rain and snow, becoming all snow after 7am. Temperature falling to around 26 by 5pm. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Wednesday Night
A 20 percent chance of snow before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 13. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Increasing clouds, with a high near 24. West wind 5 to 10 mph.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 20. West southwest wind around 5 mph, with gusts as high as 10 mph.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 29.
Friday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 9.
Saturday
A chance of snow. Mostly cloudy, with a high near 14.
Saturday Night
A chance of snow before midnight. Mostly cloudy, with a low around 1.
Sunday
Mostly sunny, with a high near 12.
Sunday Night
Mostly cloudy, with a low around 5.
Monday
Mostly cloudy, with a high near 23.
Monday Night
Mostly cloudy, with a low around 14.
Tuesday
Partly sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.47°N 87.81°W
Last Update:
8:16 pm CST Dec 9, 2025
Forecast Valid:
8pm CST Dec 9, 2025-6pm CST Dec 16, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation