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.

Freezing Fog

31°F

-1°C

Humidity 100%
Wind Speed N 7 mph
Barometer 30.22 in (1024.3 mb)
Dewpoint 31°F (-1°C)
Visibility 0.25 mi
Wind Chill24°F (-4°C)
Last update 4 Mar 12:51 am CST
Extended Forecast for

Wonder Lake IL

Dense Fog Advisory until March 4, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until March 4, 09:00am

    NOW until 9:00am Wed

    Dense Fog Advisory

  • Overnight

    Low: 30 °F

    Fog

  • Wednesday

    Wednesday: Widespread fog, mainly before 7am. Otherwise, mostly cloudy, with a high near 50. East wind 5 to 10 mph.

    High: 50 °F

    Fog then
    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers, mainly after 1am. Patchy fog after 9pm. Otherwise, cloudy, with a low around 40. Northeast wind around 5 mph.

    Low: 40 °F

    Patchy Fog
    then Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before noon, then a chance of showers. Areas of fog. Otherwise, cloudy, with a high near 46. Northeast wind 5 to 10 mph. Chance of precipitation is 70%.

    High: 46 °F

    Showers
    Likely and
    Areas Fog

  • Thursday Night

    Thursday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 41. East northeast wind around 5 mph becoming southeast after midnight.

    Low: 41 °F

    Patchy Fog

  • Friday

    Friday: A slight chance of showers before 9am, then showers and possibly a thunderstorm between 9am and 3pm, then a chance of showers and thunderstorms after 3pm. Patchy fog before noon. High near 68. Chance of precipitation is 90%.

    High: 68 °F

    Showers and
    Patchy Fog

  • Friday Night

    Friday Night: A slight chance of showers, then showers and possibly a thunderstorm after 9pm. Low around 47. Chance of precipitation is 90%.

    Low: 47 °F

    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

Detailed Forecast

Overnight
Widespread fog, mainly after 2am. Otherwise, cloudy, with a low around 30. North wind around 5 mph becoming east.
Wednesday
Widespread fog, mainly before 7am. Otherwise, mostly cloudy, with a high near 50. East wind 5 to 10 mph.
Wednesday Night
A 50 percent chance of showers, mainly after 1am. Patchy fog after 9pm. Otherwise, cloudy, with a low around 40. Northeast wind around 5 mph.
Thursday
Showers likely and possibly a thunderstorm before noon, then a chance of showers. Areas of fog. Otherwise, cloudy, with a high near 46. Northeast wind 5 to 10 mph. Chance of precipitation is 70%.
Thursday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 41. East northeast wind around 5 mph becoming southeast after midnight.
Friday
A slight chance of showers before 9am, then showers and possibly a thunderstorm between 9am and 3pm, then a chance of showers and thunderstorms after 3pm. Patchy fog before noon. High near 68. Chance of precipitation is 90%.
Friday Night
A slight chance of showers, then showers and possibly a thunderstorm after 9pm. Low around 47. Chance of precipitation is 90%.
Saturday
Partly sunny, with a high near 56.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Mostly sunny, with a high near 60. Breezy.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Showers likely. Partly sunny, with a high near 68. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wonder Lake IL
 42.38°N 88.35°W
Last Update:
1:41 am CST Mar 4, 2026
Forecast Valid:
1am CST Mar 4, 2026-6pm CDT Mar 10, 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