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

68°F

20°C

Humidity 96%
Wind Speed N 5 mph
Barometer 30.04 in (1016.2 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 5 Sep 11:51 pm CDT
Extended Forecast for

Wonder Lake IL

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 65. North northeast wind around 5 mph, with gusts as high as 10 mph.

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 78. East wind 5 to 10 mph.

    High: 78 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58. East northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

    Low: 58 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 80. Light and variable wind becoming east southeast 5 to 10 mph in the morning.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60. South southeast wind around 5 mph, with gusts as high as 10 mph.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 65. North northeast wind around 5 mph, with gusts as high as 10 mph.
Sunday
Mostly sunny, with a high near 78. East wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 58. East northeast wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
Labor Day
Mostly sunny, with a high near 80. Light and variable wind becoming east southeast 5 to 10 mph in the morning.
Monday Night
Partly cloudy, with a low around 60. South southeast wind around 5 mph, with gusts as high as 10 mph.
Tuesday
Mostly sunny, with a high near 86.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.
Wednesday
Partly sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 61.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Partly cloudy, with a low around 56.
Friday
Mostly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 59.
Saturday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wonder Lake IL
 42.38°N 88.35°W
Last Update:
8:56 pm CDT Sep 5, 2026
Forecast Valid:
12am CDT Sep 6, 2026-6pm CDT Sep 12, 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