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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

48°F

9°C

Humidity 77%
Wind Speed E 13 mph
Barometer 30.10 in (1019.2 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 3 Apr 1:51 pm CDT
Extended Forecast for

Winthrop Harbor IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 49. Northeast wind around 10 mph.

    High: 49 °F

    Mostly Cloudy

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11pm. Low around 39. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 39 °F

    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Mostly cloudy, with a high near 56. Breezy, with a south wind 10 to 15 mph becoming west 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 50%.

    High: 56 °F

    Breezy.
    Chance
    Showers then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 35 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 50. West wind 10 to 15 mph.

    High: 50 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 37. West wind 5 to 10 mph.

    Low: 37 °F

    Slight Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 48. Northwest wind 10 to 15 mph.

    High: 48 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. North wind 10 to 15 mph.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 49. Northeast wind around 10 mph.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11pm. Low around 39. Northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Mostly cloudy, with a high near 56. Breezy, with a south wind 10 to 15 mph becoming west 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 50%.
Saturday Night
Mostly cloudy, with a low around 35. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 50. West wind 10 to 15 mph.
Sunday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 37. West wind 5 to 10 mph.
Monday
Mostly sunny, with a high near 48. Northwest wind 10 to 15 mph.
Monday Night
Partly cloudy, with a low around 26. North wind 10 to 15 mph.
Tuesday
Mostly sunny, with a high near 40.
Tuesday Night
A slight chance of rain and snow showers after 1am. Mostly cloudy, with a low around 31. Chance of precipitation is 20%.
Wednesday
A slight chance of rain and snow showers. Mostly cloudy, with a high near 59. Chance of precipitation is 20%.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 47.
Thursday
A 40 percent chance of showers. Mostly cloudy, with a high near 59.
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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:
1:35 pm CDT Apr 3, 2026
Forecast Valid:
2pm CDT Apr 3, 2026-6pm CDT Apr 9, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation