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

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fog/Mist

70°F

21°C

Humidity 100%
Wind Speed Calm
Barometer 29.88 in (1010.6 mb)
Dewpoint 70°F (21°C)
Visibility 4.00 mi
Last update 11 Aug 8:51 pm CDT
Extended Forecast for

Wonder Lake IL

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly between 2am and 3am. Areas of fog after 1am. Otherwise, increasing clouds, with a low around 66. Calm wind.

    Low: 66 °F

    Chance
    T-storms and
    Areas Fog

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Areas of fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 83. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 83 °F

    Chance
    T-storms and
    Areas Fog
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers, mainly after 4am. Increasing clouds, with a low around 66. Southeast wind around 5 mph becoming calm.

    Low: 66 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78. Calm wind becoming east northeast around 5 mph in the morning. Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 63. Northeast wind around 5 mph, with gusts as high as 15 mph.

    Low: 63 °F

    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 63. Chance of precipitation is 60%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80.

    High: 80 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly between 2am and 3am. Areas of fog after 1am. Otherwise, increasing clouds, with a low around 66. Calm wind.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Areas of fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 83. Calm wind becoming west southwest around 5 mph in the afternoon.
Wednesday Night
A 50 percent chance of showers, mainly after 4am. Increasing clouds, with a low around 66. Southeast wind around 5 mph becoming calm.
Thursday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78. Calm wind becoming east northeast around 5 mph in the morning. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 63. Northeast wind around 5 mph, with gusts as high as 15 mph.
Friday
Partly sunny, with a high near 77.
Friday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 63. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80.
Saturday Night
A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 68.
Sunday
A chance of showers before 1pm. Mostly cloudy, with a high near 82.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Mostly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wonder Lake IL
 42.41°N 88.34°W
Last Update:
8:36 pm CDT Aug 11, 2026
Forecast Valid:
9pm CDT Aug 11, 2026-6pm CDT Aug 18, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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