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.

Overcast

61°F

16°C

Humidity 75%
Wind Speed NE 9 mph
Barometer 30.06 in (1017.7 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 14 Jun 9:51 am CDT
Extended Forecast for

Winthrop Harbor ILSimilar City Names

  • Today

    Today: Mostly sunny, with a high near 65. Northeast wind around 10 mph.

    High: 65 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 56. North northeast wind 5 to 10 mph.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 73. East wind around 5 mph, with gusts as high as 10 mph.

    High: 73 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 60. East northeast wind around 5 mph becoming south southeast after midnight.

    Low: 60 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 74. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 74 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 7am. Partly sunny, with a high near 86. Chance of precipitation is 40%.

    High: 86 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms. Mostly cloudy, with a high near 82.

    High: 82 °F

    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 65. Northeast wind around 10 mph.
Tonight
Mostly clear, with a low around 56. North northeast wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 73. East wind around 5 mph, with gusts as high as 10 mph.
Sunday Night
Mostly cloudy, with a low around 60. East northeast wind around 5 mph becoming south southeast after midnight.
Monday
A slight chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 74. Southeast wind 5 to 10 mph. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 7am. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65.
Wednesday
Showers and thunderstorms. Mostly cloudy, with a high near 82.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 63.
Juneteenth
Mostly sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor ILSimilar City Names
 42.47°N 87.84°W
Last Update:
8:56 am CDT Jun 14, 2025
Forecast Valid:
10am CDT Jun 14, 2025-6pm CDT Jun 20, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation