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

45°F

7°C

Humidity 77%
Wind Speed SE 6 mph
Barometer 30.10 in (1019.9 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 20 Apr 10:51 pm CDT
Extended Forecast for

Wonder Lake IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 73. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 73 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 46. West wind around 5 mph becoming northeast after midnight. Winds could gust as high as 10 mph.

    Low: 46 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 71. Northeast wind around 5 mph becoming east southeast in the afternoon. Winds could gust as high as 10 mph.

    High: 71 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. East southeast wind around 5 mph becoming south after midnight. Winds could gust as high as 15 mph.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.

    Low: 60 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72.

    High: 72 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers before 1am. Partly cloudy, with a low around 45.

    Low: 45 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 44. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 73. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Partly cloudy, with a low around 46. West wind around 5 mph becoming northeast after midnight. Winds could gust as high as 10 mph.
Wednesday
Sunny, with a high near 71. Northeast wind around 5 mph becoming east southeast in the afternoon. Winds could gust as high as 10 mph.
Wednesday Night
Partly cloudy, with a low around 51. East southeast wind around 5 mph becoming south after midnight. Winds could gust as high as 15 mph.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72.
Friday Night
A chance of showers before 1am. Partly cloudy, with a low around 45.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Mostly cloudy, with a low around 44.
Sunday
Partly sunny, with a high near 60.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 43.
Monday
A chance of showers. Mostly cloudy, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wonder Lake IL
 42.41°N 88.34°W
Last Update:
9:36 pm CDT Apr 20, 2026
Forecast Valid:
10pm CDT Apr 20, 2026-6pm CDT Apr 27, 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