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

64°F

18°C

Humidity 75%
Wind Speed S 5 mph
Barometer 30.20 in (1021.6 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 3 Oct 1:51 am CDT
Extended Forecast for

Winthrop Harbor IL

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 66. South southwest wind around 5 mph.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84. Southwest wind 5 to 10 mph.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 66. South southeast wind around 5 mph.

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 87. South wind 5 to 15 mph.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66. South southwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers. Mostly sunny, with a high near 78.

    High: 78 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 66. South southwest wind around 5 mph.
Friday
Sunny, with a high near 84. Southwest wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 66. South southeast wind around 5 mph.
Saturday
Sunny, with a high near 87. South wind 5 to 15 mph.
Saturday Night
Mostly clear, with a low around 66. South southwest wind around 10 mph, with gusts as high as 15 mph.
Sunday
Sunny, with a high near 84.
Sunday Night
Mostly clear, with a low around 65.
Monday
A chance of showers. Mostly sunny, with a high near 78.
Monday Night
A chance of showers. Mostly cloudy, with a low around 58.
Tuesday
A chance of showers. Mostly cloudy, with a high near 66.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 60.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 62.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.47°N 87.84°W
Last Update:
1:41 am CDT Oct 3, 2025
Forecast Valid:
2am CDT Oct 3, 2025-6pm CDT Oct 9, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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