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.

A Few Clouds

65°F

18°C

Humidity 63%
Wind Speed S 9 mph
Barometer 30.07 in (1018.0 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 28 Oct 7:51 pm CDT
Extended Forecast for

Wonder Lake IL

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly between midnight and 3am. Mostly cloudy, with a low around 57. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms before 10am. Mostly cloudy through mid morning, then gradual clearing, with a high near 66. Southwest wind around 10 mph becoming northwest in the afternoon. Winds could gust as high as 15 mph.

    High: 66 °F

    Slight Chance
    T-storms then
    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 37. Northwest wind around 5 mph becoming calm in the evening.

    Low: 37 °F

    Clear

  • Friday

    Friday: Increasing clouds, with a high near 59. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    High: 59 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 50. East wind around 5 mph, with gusts as high as 10 mph.

    Low: 50 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 58. Chance of precipitation is 60%.

    High: 58 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of showers. Cloudy, with a low around 48.

    Low: 48 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly between midnight and 3am. Mostly cloudy, with a low around 57. South wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
A 20 percent chance of showers and thunderstorms before 10am. Mostly cloudy through mid morning, then gradual clearing, with a high near 66. Southwest wind around 10 mph becoming northwest in the afternoon. Winds could gust as high as 15 mph.
Thursday Night
Clear, with a low around 37. Northwest wind around 5 mph becoming calm in the evening.
Friday
Increasing clouds, with a high near 59. Calm wind becoming east around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Friday Night
A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 50. East wind around 5 mph, with gusts as high as 10 mph.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 58. Chance of precipitation is 60%.
Saturday Night
A 20 percent chance of showers. Cloudy, with a low around 48.
Sunday
Mostly cloudy, with a high near 66.
Sunday Night
Mostly cloudy, with a low around 51.
Monday
Partly sunny, with a high near 67.
Monday Night
A chance of showers. Mostly cloudy, with a low around 54.
Tuesday
A chance of showers. Mostly cloudy, with a high near 67.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 52.
Wednesday
Showers likely. Mostly cloudy, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wonder Lake IL
 42.39°N 88.38°W
Last Update:
8:36 pm CDT Oct 28, 2026
Forecast Valid:
8pm CDT Oct 28, 2026-6pm CST Nov 4, 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