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.

Light Rain

35°F

2°C

Humidity 96%
Wind Speed N 10 mph
Barometer 29.63 in (1004.4 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 11 Mar 7:51 am CDT
Extended Forecast for

Winthrop Harbor IL

  • Today

    Today: Rain and snow likely, possibly mixed with sleet before 2pm, then snow likely between 2pm and 4pm, then a chance of rain and snow after 4pm. Cloudy, with a high near 38. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. Little or no snow and sleet accumulation expected.

    High: 38 °F

    Drizzle
    Likely then
    Wintry Mix
    Likely

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 29. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 29 °F

    Gradual
    Clearing

  • Thursday

    Thursday: Sunny, with a high near 45. West wind around 10 mph.

    High: 45 °F

    Sunny

  • Thursday Night

    Thursday Night: Rain likely, mainly after 1am. Cloudy, with a low around 37. Windy, with a south wind 10 to 15 mph increasing to 20 to 25 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Rain Likely
    and Windy

  • Friday

    Friday: Mostly sunny, with a high near 45. Windy, with a west wind 20 to 25 mph, with gusts as high as 45 mph.

    High: 45 °F

    Mostly Sunny
    and Windy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 28. Northwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.

    Low: 28 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow, mainly after 1pm. Cloudy, with a high near 38. North wind 5 to 10 mph becoming southeast in the afternoon.

    High: 38 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Rain and snow likely, mainly after 1am. Cloudy, with a low around 32. East wind 10 to 15 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 32 °F

    Rain/Snow
    Likely

  • Sunday

    Sunday: Rain and snow. High near 41. Chance of precipitation is 90%.

    High: 41 °F

    Rain/Snow

Detailed Forecast

Today
Rain and snow likely, possibly mixed with sleet before 2pm, then snow likely between 2pm and 4pm, then a chance of rain and snow after 4pm. Cloudy, with a high near 38. Northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. Little or no snow and sleet accumulation expected.
Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 29. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 45. West wind around 10 mph.
Thursday Night
Rain likely, mainly after 1am. Cloudy, with a low around 37. Windy, with a south wind 10 to 15 mph increasing to 20 to 25 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly sunny, with a high near 45. Windy, with a west wind 20 to 25 mph, with gusts as high as 45 mph.
Friday Night
Mostly cloudy, with a low around 28. Northwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Saturday
A 30 percent chance of snow, mainly after 1pm. Cloudy, with a high near 38. North wind 5 to 10 mph becoming southeast in the afternoon.
Saturday Night
Rain and snow likely, mainly after 1am. Cloudy, with a low around 32. East wind 10 to 15 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Rain and snow. High near 41. Chance of precipitation is 90%.
Sunday Night
Rain and snow likely before 1am, then a chance of snow. Mostly cloudy, with a low around 18. Blustery. Chance of precipitation is 60%.
Monday
A 20 percent chance of snow. Mostly cloudy, with a high near 27. Blustery.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Sunny, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.49°N 87.81°W (Elev. 600 ft)
Last Update:
8:37 am CDT Mar 11, 2026
Forecast Valid:
8am CDT Mar 11, 2026-6pm CDT Mar 17, 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