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

28°F

-2°C

Humidity 72%
Wind Speed W 6 mph
Barometer 30.12 in (1021.0 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 11 Feb 2:51 am CST
Extended Forecast for

Winthrop Harbor IL

  • Overnight

    Overnight: Mostly clear, with a low around 26. Northwest wind around 10 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 37. Northwest wind 10 to 15 mph.

    High: 37 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 24. Northwest wind 5 to 10 mph.

    Low: 24 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 36. Northwest wind around 5 mph becoming calm.

    High: 36 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. Calm wind becoming southwest around 5 mph after midnight.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 45. Southwest wind 5 to 10 mph.

    High: 45 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 31. West wind around 5 mph.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 43. West wind around 5 mph becoming southeast in the afternoon.

    High: 43 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 26. Northwest wind around 10 mph.
Wednesday
Sunny, with a high near 37. Northwest wind 10 to 15 mph.
Wednesday Night
Increasing clouds, with a low around 24. Northwest wind 5 to 10 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 36. Northwest wind around 5 mph becoming calm.
Thursday Night
Mostly clear, with a low around 29. Calm wind becoming southwest around 5 mph after midnight.
Friday
Sunny, with a high near 45. Southwest wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 31. West wind around 5 mph.
Saturday
Sunny, with a high near 43. West wind around 5 mph becoming southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Mostly sunny, with a high near 45.
Sunday Night
Partly cloudy, with a low around 33.
Washington's Birthday
Partly sunny, with a high near 45.
Monday Night
Mostly cloudy, with a low around 37.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.49°N 87.81°W (Elev. 600 ft)
Last Update:
2:32 am CST Feb 11, 2026
Forecast Valid:
3am CST Feb 11, 2026-6pm CST Feb 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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