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.

Overcast

14°F

-10°C

Humidity 73%
Wind Speed N 5 mph
Barometer 30.34 in (1029.6 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill6°F (-14°C)
Last update 8 Dec 2:51 am CST
Extended Forecast for

Wonder Lake IL

  • Overnight

    Overnight: Isolated flurries before 4am. Mostly cloudy, with a steady temperature around 11. North wind around 5 mph becoming calm.

    Low: 11 °F

    Isolated
    Flurries

  • Monday

    Monday: A slight chance of flurries before 9am. Mostly cloudy, with a high near 23. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 23 °F

    Slight Chance
    Flurries

  • Monday Night

    Monday Night: A 30 percent chance of snow, mainly between 11pm and 3am. Mostly cloudy, with a temperature rising to around 25 by 5am. South southwest wind 5 to 15 mph, with gusts as high as 30 mph.

    Low: 16 °F⇑

    Chance Snow

  • Tuesday

    Tuesday: A 20 percent chance of rain after 3pm. Cloudy, with a high near 35. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 35 °F

    Cloudy then
    Slight Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain, possibly mixed with snow before midnight, then rain likely between midnight and 3am, then rain and snow likely after 3am. Low around 32. Breezy, with a south southwest wind 10 to 20 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%.

    Low: 32 °F

    Rain/Snow and
    Breezy

  • Wednesday

    Wednesday: Rain and snow likely, becoming all snow after 9am. Mostly cloudy, with a high near 36. Breezy. Chance of precipitation is 60%.

    High: 36 °F

    Rain/Snow
    Likely and
    Breezy then
    Slight Chance
    Snow

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 8.

    Low: 8 °F

    Slight Chance
    Snow

  • Thursday

    Thursday: Partly sunny, with a high near 21.

    High: 21 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 8.

    Low: 8 °F

    Chance Snow

Detailed Forecast

Overnight
Isolated flurries before 4am. Mostly cloudy, with a steady temperature around 11. North wind around 5 mph becoming calm.
Monday
A slight chance of flurries before 9am. Mostly cloudy, with a high near 23. Light and variable wind becoming south 5 to 10 mph in the morning.
Monday Night
A 30 percent chance of snow, mainly between 11pm and 3am. Mostly cloudy, with a temperature rising to around 25 by 5am. South southwest wind 5 to 15 mph, with gusts as high as 30 mph.
Tuesday
A 20 percent chance of rain after 3pm. Cloudy, with a high near 35. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Rain, possibly mixed with snow before midnight, then rain likely between midnight and 3am, then rain and snow likely after 3am. Low around 32. Breezy, with a south southwest wind 10 to 20 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%.
Wednesday
Rain and snow likely, becoming all snow after 9am. Mostly cloudy, with a high near 36. Breezy. Chance of precipitation is 60%.
Wednesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 8.
Thursday
Partly sunny, with a high near 21.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 8.
Friday
A chance of snow. Mostly cloudy, with a high near 17.
Friday Night
A chance of snow. Mostly cloudy, with a low around -3.
Saturday
Partly sunny and cold, with a high near 7.
Saturday Night
Mostly cloudy, with a low around -3.
Sunday
Mostly sunny, with a high near 15.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Wonder Lake IL
 42.41°N 88.34°W
Last Update:
2:31 am CST Dec 8, 2025
Forecast Valid:
3am CST Dec 8, 2025-6pm CST Dec 14, 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