Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

67°F

19°C

Humidity 73%
Wind Speed S 20 G 35 mph
Barometer 29.70 in (1004.8 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 31 Mar 12:51 am CDT
Extended Forecast for

Winthrop Harbor IL

Severe T-storm Watch until March 31, 03:00am
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until March 31, 03:00am

    NOW until 3:00am Tue

    Severe T-storm Watch

  • Overnight

    Low: 54 °F

    Severe
    Thunderstorms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm.  Temperature rising to near 66 by 11am, then falling to around 46 during the remainder of the day. Southwest wind 10 to 15 mph becoming north in the afternoon.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 66 °F

    Chance
    T-storms then
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers after 5am.  Mostly cloudy, with a low around 35. Breezy, with a north wind 10 to 20 mph, with gusts as high as 25 mph.  Chance of precipitation is 40%.

    Low: 35 °F

    Chance
    Showers then
    Slight Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: A 40 percent chance of rain.  Mostly cloudy, with a high near 40. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 40 °F

    Chance Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: Rain likely before 1am, then rain and possibly a thunderstorm between 1am and 4am, then rain after 4am.  Low around 36. Breezy, with an east wind 15 to 20 mph, with gusts as high as 25 mph.  Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 36 °F

    Rain Likely
    then Rain and
    Breezy

  • Thursday

    Thursday: Rain and possibly a thunderstorm before 10am, then rain between 10am and 1pm, then rain and possibly a thunderstorm after 1pm.  High near 62. Breezy, with an east wind 15 to 20 mph becoming south in the afternoon. Winds could gust as high as 30 mph.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 62 °F

    Rain and
    Breezy

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm.  Mostly cloudy, with a low around 45. South wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 45 °F

    Rain Likely

  • Friday

    Friday: A 20 percent chance of rain after 1pm.  Partly sunny, with a high near 56. West wind around 5 mph becoming northeast in the afternoon.

    High: 56 °F

    Partly Sunny
    then Slight
    Chance Rain

Detailed Forecast

Overnight
A 40 percent chance of showers and thunderstorms, mainly after 2am. Some of the storms could be severe. Cloudy, with a low around 54. Southwest wind around 10 mph.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. Temperature rising to near 66 by 11am, then falling to around 46 during the remainder of the day. Southwest wind 10 to 15 mph becoming north in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers after 5am. Mostly cloudy, with a low around 35. Breezy, with a north wind 10 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 40. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 25 mph.
Wednesday Night
Rain likely before 1am, then rain and possibly a thunderstorm between 1am and 4am, then rain after 4am. Low around 36. Breezy, with an east wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Thursday
Rain and possibly a thunderstorm before 10am, then rain between 10am and 1pm, then rain and possibly a thunderstorm after 1pm. High near 62. Breezy, with an east wind 15 to 20 mph becoming south in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 45. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 20 percent chance of rain after 1pm. Partly sunny, with a high near 56. West wind around 5 mph becoming northeast in the afternoon.
Friday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 42. Chance of precipitation is 70%.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 58. Chance of precipitation is 70%.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 35.
Sunday
Mostly cloudy, with a high near 45.
Sunday Night
Partly cloudy, with a low around 32.
Monday
Mostly sunny, with a high near 46.
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ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.49°N 87.81°W (Elev. 600 ft)
1:38 am CDT Mar 31, 2026
1am CDT Mar 31, 2026-6pm CDT Apr 6, 2026
 
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Additional Resources

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