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

59°F

15°C

Humidity 81%
Wind Speed S 9 mph
Barometer 30.10 in (1018.8 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 2 Nov 9:51 am CST
Extended Forecast for

Winthrop Harbor ILSimilar City Names

  • Today

    Today: Patchy drizzle between noon and 4pm, then a slight chance of showers after 4pm. Cloudy, with a high near 62. South southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 62 °F

    Cloudy then
    Patchy
    Drizzle

  • Tonight

    Tonight: A 20 percent chance of showers before 5am. Cloudy, with a low around 58. Breezy, with a south wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 58 °F

    Slight Chance
    Showers and
    Breezy

  • Tuesday

    Tuesday: Showers, mainly after 5pm. High near 69. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 69 °F

    Breezy.
    Mostly Cloudy
    then Showers

  • Tuesday Night

    Tuesday Night: Showers. Low around 56. Breezy, with a south wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    Low: 56 °F

    Showers and
    Breezy

  • Wednesday

    Wednesday: Showers likely, mainly before noon. Mostly cloudy, with a high near 66. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    High: 66 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers after noon. Mostly cloudy, with a high near 57.

    High: 57 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

Detailed Forecast

Today
Patchy drizzle between noon and 4pm, then a slight chance of showers after 4pm. Cloudy, with a high near 62. South southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tonight
A 20 percent chance of showers before 5am. Cloudy, with a low around 58. Breezy, with a south wind 15 to 20 mph, with gusts as high as 25 mph.
Tuesday
Showers, mainly after 5pm. High near 69. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Showers. Low around 56. Breezy, with a south wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Wednesday
Showers likely, mainly before noon. Mostly cloudy, with a high near 66. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
A 30 percent chance of showers after noon. Mostly cloudy, with a high near 57.
Thursday Night
Mostly cloudy, with a low around 43.
Friday
Mostly cloudy, with a high near 56.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
Partly sunny, with a high near 56.
Saturday Night
Mostly cloudy, with a low around 40.
Sunday
Partly sunny, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor ILSimilar City Names
 42.47°N 87.84°W
Last Update:
5:21 am CST Nov 2, 2026
Forecast Valid:
10am CST Nov 2, 2026-6pm CST Nov 8, 2026
 
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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