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.

Overcast

40°F

4°C

Humidity 93%
Wind Speed N 10 mph
Barometer 29.87 in (1011.6 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 10 Mar 8:51 am CDT
Extended Forecast for

Winthrop Harbor IL

  • Today

    Today: A chance of rain, with thunderstorms also possible after 4pm. Patchy fog before 11am. Otherwise, cloudy, with a high near 44. North wind around 15 mph. Chance of precipitation is 50%.

    High: 44 °F

    Patchy Fog
    then Chance
    Rain

  • Tonight

    Tonight: Rain and thunderstorms before 3am, then a chance of showers and thunderstorms between 3am and 4am, then a chance of showers after 4am. Patchy fog. Low around 36. North wind around 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 36 °F

    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Rain showers before 2pm, then a chance of rain and snow showers between 2pm and 4pm, then a chance of snow showers after 4pm. High near 37. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 37 °F

    Showers then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 28. Northwest wind 5 to 15 mph.

    Low: 28 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 45. West wind 5 to 10 mph becoming south in the afternoon.

    High: 45 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Rain likely, mainly after 1am. Cloudy, with a low around 37. Breezy, with a south wind 10 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Rain Likely
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 47. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 47 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 30. Northwest wind 5 to 10 mph.

    Low: 30 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of snow before 1pm, then a chance of rain and snow. Cloudy, with a high near 44. Chance of precipitation is 30%.

    High: 44 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

Detailed Forecast

Today
A chance of rain, with thunderstorms also possible after 4pm. Patchy fog before 11am. Otherwise, cloudy, with a high near 44. North wind around 15 mph. Chance of precipitation is 50%.
Tonight
Rain and thunderstorms before 3am, then a chance of showers and thunderstorms between 3am and 4am, then a chance of showers after 4am. Patchy fog. Low around 36. North wind around 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Rain showers before 2pm, then a chance of rain and snow showers between 2pm and 4pm, then a chance of snow showers after 4pm. High near 37. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 28. Northwest wind 5 to 15 mph.
Thursday
Mostly sunny, with a high near 45. West wind 5 to 10 mph becoming south in the afternoon.
Thursday Night
Rain likely, mainly after 1am. Cloudy, with a low around 37. Breezy, with a south wind 10 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Partly sunny, with a high near 47. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph.
Friday Night
Mostly cloudy, with a low around 30. Northwest wind 5 to 10 mph.
Saturday
A slight chance of snow before 1pm, then a chance of rain and snow. Cloudy, with a high near 44. Chance of precipitation is 30%.
Saturday Night
Rain likely, mainly after 1am. Cloudy, with a low around 34. Chance of precipitation is 60%.
Sunday
Rain and snow. High near 41. Chance of precipitation is 80%.
Sunday Night
A chance of rain and snow. Cloudy, with a low around 19. Chance of precipitation is 50%.
Monday
A 20 percent chance of snow. Mostly cloudy, with a high near 27.
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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:
9:22 am CDT Mar 10, 2026
Forecast Valid:
9am CDT Mar 10, 2026-6pm CDT Mar 16, 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