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

52°F

11°C

Humidity 37%
Wind Speed SW 17 mph
Barometer 30.18 in (1022.2 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 29 Mar 9:51 am CDT
Extended Forecast for

Winthrop Harbor IL

  • Today

    Today: Partly sunny, with a high near 56. South wind around 15 mph.

    High: 56 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 49. South wind around 10 mph.

    Low: 49 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 65. Southwest wind around 10 mph.

    High: 65 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 51. Southwest wind around 10 mph.

    Low: 51 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 63. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 63 °F

    Chance
    T-storms then
    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain likely and possibly a thunderstorm. Cloudy, with a low around 35. North wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Rain Likely

  • Wednesday

    Wednesday: A 20 percent chance of rain after 1pm. Mostly cloudy, with a high near 41. Northeast wind 10 to 15 mph.

    High: 41 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 4am, then a chance of rain and snow. Mostly cloudy, with a low around 32. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    Low: 32 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow before 4pm, then a chance of rain. Mostly cloudy, with a high near 42. Chance of precipitation is 50%.

    High: 42 °F

    Chance
    Rain/Snow

Detailed Forecast

Today
Partly sunny, with a high near 56. South wind around 15 mph.
Tonight
Partly cloudy, with a low around 49. South wind around 10 mph.
Monday
Mostly sunny, with a high near 65. Southwest wind around 10 mph.
Monday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 51. Southwest wind around 10 mph.
Tuesday
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 63. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Rain likely and possibly a thunderstorm. Cloudy, with a low around 35. North wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
A 20 percent chance of rain after 1pm. Mostly cloudy, with a high near 41. Northeast wind 10 to 15 mph.
Wednesday Night
A chance of rain before 4am, then a chance of rain and snow. Mostly cloudy, with a low around 32. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Thursday
A chance of rain and snow before 4pm, then a chance of rain. Mostly cloudy, with a high near 42. Chance of precipitation is 50%.
Thursday Night
Rain likely, mainly before 1am. Cloudy, with a low around 36. Chance of precipitation is 60%.
Friday
A 20 percent chance of rain. Mostly cloudy, with a high near 49.
Friday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 40.
Saturday
Rain likely. Mostly cloudy, with a high near 57. Chance of precipitation is 60%.
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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:
8:36 am CDT Mar 29, 2026
Forecast Valid:
10am CDT Mar 29, 2026-6pm CDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation