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.

Fair

50°F

10°C

Humidity 30%
Wind Speed W 13 G 24 mph
Barometer 30.14 in (1021.0 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 5 Apr 2:51 pm CDT
Extended Forecast for

Winthrop Harbor IL

  • Tonight

    Tonight: A chance of showers between 11pm and 1am. Increasing clouds, with a low around 38. West wind 5 to 10 mph. Chance of precipitation is 50%.

    Low: 38 °F

    Chance
    Showers

  • Monday

    Monday: Partly sunny, with a high near 47. Northwest wind 10 to 15 mph.

    High: 47 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of snow showers between 10pm and 4am. Mostly cloudy, with a low around 27. North wind around 10 mph. Chance of precipitation is 40%.

    Low: 27 °F

    Chance Snow
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 38. North wind around 5 mph becoming east in the afternoon.

    High: 38 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow showers between 1am and 4am, then a slight chance of rain showers after 4am. Increasing clouds, with a low around 31. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 59. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 59 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 51. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 51 °F

    Showers
    Likely

  • Thursday

    Thursday: A 40 percent chance of showers. Partly sunny, with a high near 62. Southwest wind around 10 mph.

    High: 62 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers between 11pm and 1am. Increasing clouds, with a low around 38. West wind 5 to 10 mph. Chance of precipitation is 50%.
Monday
Partly sunny, with a high near 47. Northwest wind 10 to 15 mph.
Monday Night
A chance of snow showers between 10pm and 4am. Mostly cloudy, with a low around 27. North wind around 10 mph. Chance of precipitation is 40%.
Tuesday
Mostly sunny, with a high near 38. North wind around 5 mph becoming east in the afternoon.
Tuesday Night
A slight chance of rain and snow showers between 1am and 4am, then a slight chance of rain showers after 4am. Increasing clouds, with a low around 31. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, with a high near 59. South wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 51. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 62. Southwest wind around 10 mph.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 41.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 52.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 40.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 55.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 46.
Sunday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 66. Chance of precipitation is 60%.
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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:
2:36 pm CDT Apr 5, 2026
Forecast Valid:
3pm CDT Apr 5, 2026-6pm CDT Apr 12, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation