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

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

8°F

-13°C

Humidity 57%
Wind Speed W 15 G 24 mph
Barometer 30.15 in (1023.9 mb)
Dewpoint -4°F (-20°C)
Visibility 10.00 mi
Wind Chill-9°F (-23°C)
Last update 28 Jan 10:51 am CST
Extended Forecast for

Winthrop Harbor IL

  • Today

    Today: Mostly sunny, with a high near 14. Wind chill values between -10 and zero. West wind 10 to 15 mph.

    High: 14 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around -2. Wind chill values between -5 and -15. Northwest wind around 10 mph.

    Low: -2 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 14. Wind chill values between -5 and -15. Northwest wind 5 to 10 mph.

    High: 14 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow after midnight. Partly cloudy, with a low around 2. Wind chill values between -10 and zero. Northwest wind 5 to 10 mph.

    Low: 2 °F

    Partly Cloudy
    then Chance
    Snow

  • Friday

    Friday: Snow likely, mainly before noon. Partly sunny, with a high near 17. North wind around 10 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    High: 17 °F

    Snow Likely

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 7. Northwest wind around 10 mph.

    Low: 7 °F

    Chance Snow

  • Saturday

    Saturday: A 30 percent chance of snow, mainly before noon. Partly sunny, with a high near 22. North wind 5 to 10 mph.

    High: 22 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 10. Northwest wind around 5 mph.

    Low: 10 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny
    then Slight
    Chance Snow

Detailed Forecast

Today
Mostly sunny, with a high near 14. Wind chill values between -10 and zero. West wind 10 to 15 mph.
Tonight
Mostly clear, with a low around -2. Wind chill values between -5 and -15. Northwest wind around 10 mph.
Thursday
Sunny, with a high near 14. Wind chill values between -5 and -15. Northwest wind 5 to 10 mph.
Thursday Night
A 30 percent chance of snow after midnight. Partly cloudy, with a low around 2. Wind chill values between -10 and zero. Northwest wind 5 to 10 mph.
Friday
Snow likely, mainly before noon. Partly sunny, with a high near 17. North wind around 10 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Friday Night
A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 7. Northwest wind around 10 mph.
Saturday
A 30 percent chance of snow, mainly before noon. Partly sunny, with a high near 22. North wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 10. Northwest wind around 5 mph.
Sunday
A 20 percent chance of snow after noon. Mostly sunny, with a high near 25.
Sunday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 13.
Monday
Mostly cloudy, with a high near 27.
Monday Night
Mostly cloudy, with a low around 12.
Tuesday
Mostly cloudy, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.49°N 87.81°W (Elev. 600 ft)
Last Update:
9:06 am CST Jan 28, 2026
Forecast Valid:
10am CST Jan 28, 2026-6pm CST Feb 3, 2026
 
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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