Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Partly Cloudy

32°F

0°C

Humidity 47%
Wind Speed W 9 mph
Barometer 29.67 in (1006.0 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 25 Feb 11:51 am CST
Extended Forecast for

Winthrop Harbor IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 32. West wind 10 to 15 mph.

    High: 32 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 21. Northwest wind around 5 mph becoming calm  after midnight.

    Low: 21 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 40. Light west wind becoming southwest 5 to 10 mph in the morning.

    High: 40 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32. Southwest wind 5 to 10 mph.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 57. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 57 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 29. Southwest wind 10 to 15 mph becoming northwest after midnight.

    Low: 29 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 50 percent chance of snow after noon.  Mostly cloudy, with a high near 33. North wind around 10 mph.

    High: 33 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow.  Mostly cloudy, with a low around 21. North wind around 10 mph.

    Low: 21 °F

    Slight Chance
    Snow

  • Sunday

    Sunday: A 20 percent chance of snow.  Mostly cloudy, with a high near 29.

    High: 29 °F

    Slight Chance
    Snow

Detailed Forecast

This Afternoon
Sunny, with a high near 32. West wind 10 to 15 mph.
Tonight
Mostly clear, with a low around 21. Northwest wind around 5 mph becoming calm after midnight.
Thursday
Mostly sunny, with a high near 40. Light west wind becoming southwest 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 32. Southwest wind 5 to 10 mph.
Friday
Sunny, with a high near 57. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Friday Night
Increasing clouds, with a low around 29. Southwest wind 10 to 15 mph becoming northwest after midnight.
Saturday
A 50 percent chance of snow after noon. Mostly cloudy, with a high near 33. North wind around 10 mph.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 21. North wind around 10 mph.
Sunday
A 20 percent chance of snow. Mostly cloudy, with a high near 29.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 22.
Monday
Mostly sunny, with a high near 33.
Monday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 25.
Tuesday
A 30 percent chance of snow. Partly sunny, with a high near 39.
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ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.49°N 87.81°W (Elev. 600 ft)
12:22 pm CST Feb 25, 2026
12pm CST Feb 25, 2026-6pm CST Mar 3, 2026
 
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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