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.

Mostly Cloudy

62°F

17°C

Humidity 96%
Wind Speed E 5 mph
Barometer 29.94 in (1013.0 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 14 Oct 1:51 am CDT
Extended Forecast for

Winthrop Harbor IL

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms before 4am. Cloudy, with a low around 60. North northeast wind around 5 mph.

    Low: 60 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers between 10am and 1pm. Mostly cloudy, with a high near 61. North northeast wind 10 to 15 mph. Chance of precipitation is 20%.

    High: 61 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 56. North northeast wind around 15 mph.

    Low: 56 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain and possibly a thunderstorm, mainly after 1pm. High near 58. East southeast wind 10 to 15 mph. Chance of precipitation is 100%.

    High: 58 °F

    Chance Rain
    then Rain

  • Thursday Night

    Thursday Night: Rain and possibly a thunderstorm before 1am, then a slight chance of rain. Low around 50. Northeast wind 5 to 10 mph becoming northwest 10 to 15 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 80%.

    Low: 50 °F

    Rain

  • Friday

    Friday: A 30 percent chance of rain, mainly before 1pm. Partly sunny, with a high near 55. Breezy.

    High: 55 °F

    Chance Rain
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38. Breezy.

    Low: 38 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Saturday

    Saturday: Patchy frost before 7am. Otherwise, sunny, with a high near 56.

    High: 56 °F

    Patchy Frost
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms before 4am. Cloudy, with a low around 60. North northeast wind around 5 mph.
Wednesday
A slight chance of showers between 10am and 1pm. Mostly cloudy, with a high near 61. North northeast wind 10 to 15 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 56. North northeast wind around 15 mph.
Thursday
Rain and possibly a thunderstorm, mainly after 1pm. High near 58. East southeast wind 10 to 15 mph. Chance of precipitation is 100%.
Thursday Night
Rain and possibly a thunderstorm before 1am, then a slight chance of rain. Low around 50. Northeast wind 5 to 10 mph becoming northwest 10 to 15 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 80%.
Friday
A 30 percent chance of rain, mainly before 1pm. Partly sunny, with a high near 55. Breezy.
Friday Night
Partly cloudy, with a low around 38. Breezy.
Saturday
Patchy frost before 7am. Otherwise, sunny, with a high near 56.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Sunny, with a high near 63.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Partly sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winthrop Harbor IL
 42.47°N 87.84°W
Last Update:
1:21 am CDT Oct 14, 2026
Forecast Valid:
2am CDT Oct 14, 2026-6pm CDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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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