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.

Partly Cloudy

79°F

26°C

Humidity 50%
Wind Speed E 9 mph
Barometer 30.06 in (1017.2 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 2 Sep 12:51 pm CDT
Extended Forecast for

Wonder Lake IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 79. West wind around 5 mph.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after 4am. Partly cloudy, with a low around 57. Calm wind becoming southwest around 5 mph after midnight.

    Low: 57 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 73. West wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 73 °F

    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 43. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 43 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 64. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 64 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 50. Breezy.

    Low: 50 °F

    Partly Cloudy
    then Chance
    Showers and
    Breezy

  • Friday

    Friday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 64. Breezy.

    High: 64 °F

    Slight Chance
    Showers and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 79. West wind around 5 mph.
Tonight
A 20 percent chance of showers after 4am. Partly cloudy, with a low around 57. Calm wind becoming southwest around 5 mph after midnight.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 73. West wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A 20 percent chance of showers before 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 43. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday
Mostly sunny, with a high near 64. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday Night
A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 50. Breezy.
Friday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 64. Breezy.
Friday Night
Mostly clear, with a low around 44.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Mostly sunny, with a high near 71.
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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:
1:06 pm CDT Sep 2, 2025
Forecast Valid:
1pm CDT Sep 2, 2025-6pm CDT Sep 8, 2025
 
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