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.

Partly Cloudy

69°F

21°C

Humidity 47%
Wind Speed SW 16 G 32 mph
Barometer 29.75 in (1007.1 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 12 May 6:51 pm CDT
Extended Forecast for

Winthrop Harbor IL

Wind Advisory until May 12, 08:00pm
Click here for hazard details and duration
...
  •  
    Wind Advisory until May 12, 08:00pm

    NOW until 8:00pm Tue

    Wind Advisory

  • Tonight

    Low: 48 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 59. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 59 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming clear, with a low around 42. North wind around 5 mph becoming calm in the evening.

    Low: 42 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 61. Northwest wind around 5 mph becoming east in the afternoon.

    High: 61 °F

    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 1am. Increasing clouds, with a low around 47. Southeast wind 5 to 10 mph.

    Low: 47 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 78. South wind 10 to 15 mph.

    High: 78 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers. Partly cloudy, with a low around 54. South wind 5 to 10 mph.

    Low: 54 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 82. Southwest wind 5 to 10 mph.

    High: 82 °F

    Sunny

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 48. Southwest wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 30 mph.
Wednesday
Partly sunny, with a high near 59. North wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly cloudy, then gradually becoming clear, with a low around 42. North wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 61. Northwest wind around 5 mph becoming east in the afternoon.
Thursday Night
A 40 percent chance of showers after 1am. Increasing clouds, with a low around 47. Southeast wind 5 to 10 mph.
Friday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 78. South wind 10 to 15 mph.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 54. South wind 5 to 10 mph.
Saturday
Sunny, with a high near 82. Southwest wind 5 to 10 mph.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 51.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 75.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Monday
Showers likely. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
Monday Night
Showers likely. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 72.
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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:
6:32 pm CDT May 12, 2026
Forecast Valid:
7pm CDT May 12, 2026-6pm CDT May 19, 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