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

36°F

2°C

Humidity 82%
Wind Speed E 15 mph
Barometer 30.12 in (1021.2 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 1 Apr 11:51 pm CDT
Extended Forecast for

Winthrop Harbor IL

  • Overnight

    Overnight: Rain after 1am. Low around 35. Breezy, with an east wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Rain and
    Breezy

  • Thursday

    Thursday: Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm. High near 62. East wind around 15 mph becoming south in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    High: 62 °F

    Showers

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 43. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 43 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Friday

    Friday: Partly sunny, with a high near 50. West wind 5 to 10 mph becoming northeast in the afternoon.

    High: 50 °F

    Partly Sunny

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 40. Northeast wind around 10 mph becoming southeast after midnight. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 7am, then a chance of showers between 7am and 1pm. Mostly cloudy, with a high near 58. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 58 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35. West wind around 15 mph.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 49. Northwest wind 10 to 15 mph.

    High: 49 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Overnight
Rain after 1am. Low around 35. Breezy, with an east wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm. High near 62. East wind around 15 mph becoming south in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Thursday Night
Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 43. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Partly sunny, with a high near 50. West wind 5 to 10 mph becoming northeast in the afternoon.
Friday Night
Showers and possibly a thunderstorm. Low around 40. Northeast wind around 10 mph becoming southeast after midnight. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers likely and possibly a thunderstorm before 7am, then a chance of showers between 7am and 1pm. Mostly cloudy, with a high near 58. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Mostly cloudy, with a low around 35. West wind around 15 mph.
Sunday
Partly sunny, with a high near 49. Northwest wind 10 to 15 mph.
Sunday Night
Partly cloudy, with a low around 35.
Monday
A slight chance of rain and snow showers before 10am, then a slight chance of rain showers. Mostly sunny, with a high near 49. Chance of precipitation is 20%.
Monday Night
A slight chance of rain and snow showers. Mostly cloudy, with a low around 31. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 41.
Tuesday Night
Mostly clear, with a low around 31.
Wednesday
Mostly sunny, with a high near 52.
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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:
12:32 am CDT Apr 2, 2026
Forecast Valid:
12am CDT Apr 2, 2026-6pm CDT Apr 8, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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