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

73°F

23°C

Humidity 66%
Wind Speed SE 6 mph
Barometer 30.19 in (1021.5 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 7 Sep 9:51 am CDT
Extended Forecast for

Wonder Lake IL

  • Labor Day

    Labor Day: Sunny, with a high near 78. East southeast wind 5 to 10 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 60. East wind around 5 mph.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 84. South wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 84 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm after 1am. Low around 70. South wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 80%.

    Low: 70 °F

    Mostly Cloudy
    then Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm. Mostly cloudy, with a high near 82. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

Detailed Forecast

Labor Day
Sunny, with a high near 78. East southeast wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 60. East wind around 5 mph.
Tuesday
Partly sunny, with a high near 84. South wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday Night
Showers and possibly a thunderstorm after 1am. Low around 70. South wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 80%.
Wednesday
Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm. Mostly cloudy, with a high near 82. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 80.
Friday Night
A chance of showers after 1am. Partly cloudy, with a low around 62.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
A chance of showers. Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Wonder Lake IL
 42.39°N 88.38°W
Last Update:
9:11 am CDT Sep 7, 2026
Forecast Valid:
10am CDT Sep 7, 2026-6pm CDT Sep 13, 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