National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

44°F

7°C

Humidity 37%
Wind Speed NW 12 mph
Barometer 29.76 in (1007.5 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 16 Nov 12:51 am CST
Extended Forecast for

Winthrop Harbor IL

  • Overnight

    Overnight: Clear, with a low around 34. Northwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 34 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 47. Northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 47 °F

    Sunny

  • Sunday Night

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

    Low: 30 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 47. Northwest wind around 5 mph becoming south in the afternoon.

    High: 47 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Rain likely, mainly after midnight. Cloudy, with a low around 39. Southeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 39 °F

    Slight Chance
    Rain then
    Rain Likely

  • Tuesday

    Tuesday: Rain likely, mainly before noon. Cloudy, with a high near 45. East wind around 10 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 45 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before midnight. Cloudy, with a low around 40. East wind 5 to 10 mph.

    Low: 40 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 48. East wind 5 to 10 mph.

    High: 48 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Overnight
Clear, with a low around 34. Northwest wind around 15 mph, with gusts as high as 30 mph.
Sunday
Sunny, with a high near 47. Northwest wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 30. Northwest wind 5 to 10 mph.
Monday
Increasing clouds, with a high near 47. Northwest wind around 5 mph becoming south in the afternoon.
Monday Night
Rain likely, mainly after midnight. Cloudy, with a low around 39. Southeast wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Rain likely, mainly before noon. Cloudy, with a high near 45. East wind around 10 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
A 20 percent chance of rain before midnight. Cloudy, with a low around 40. East wind 5 to 10 mph.
Wednesday
Mostly cloudy, with a high near 48. East wind 5 to 10 mph.
Wednesday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 41.
Thursday
Rain likely, mainly after noon. Mostly cloudy, with a high near 53. Chance of precipitation is 60%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.
Friday
A 50 percent chance of rain. Mostly cloudy, with a high near 51.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 35.
Saturday
A 20 percent chance of rain. Mostly sunny, with a high near 45.
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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:
12:56 am CST Nov 16, 2025
Forecast Valid:
1am CST Nov 16, 2025-6pm CST Nov 22, 2025
 
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