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

38°F

3°C

Humidity 100%
Wind Speed Calm
Barometer 29.98 in (1016.0 mb)
Dewpoint 38°F (3°C)
Visibility 0.25 mi
Last update 5 Mar 4:51 am CST
Extended Forecast for

Wonder Lake IL

Dense Fog Advisory March 5, 05:46am until March 5, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory March 5, 05:46am until March 5, 12:00pm

    NOW until 12:00pm Thu

    Dense Fog Advisory

  • Overnight

    Low: 38 °F

    Patchy
    Drizzle and
    Areas Dense
    Fog

  • Thursday

    Thursday: Patchy drizzle before 1pm. Areas of dense fog. Otherwise, cloudy, with a high near 46. Northeast wind 5 to 10 mph.

    High: 46 °F

    Patchy
    Drizzle and
    Areas Dense
    Fog

  • Thursday Night

    Thursday Night: Widespread fog, mainly after midnight. Otherwise, cloudy, with a low around 39. Northeast wind around 5 mph becoming southeast after midnight. Winds could gust as high as 10 mph.

    Low: 39 °F

    Fog

  • Friday

    Friday: A chance of showers and thunderstorms before 9am, then showers and possibly a thunderstorm between 9am and noon, then a slight chance of showers and thunderstorms after noon. Areas of fog before noon. High near 69. Southeast wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%.

    High: 69 °F

    Showers and
    Areas Fog
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 52. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

    Low: 52 °F

    Chance
    T-storms then
    Showers and
    Breezy

  • Saturday

    Saturday: A 20 percent chance of showers before 9am. Partly sunny, with a high near 57. Breezy.

    High: 57 °F

    Slight Chance
    Showers and
    Breezy then
    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60. Breezy.

    High: 60 °F

    Sunny then
    Sunny and
    Breezy

Detailed Forecast

Overnight
Patchy drizzle. Areas of dense fog. Otherwise, cloudy, with a low around 38. Northeast wind around 5 mph.
Thursday
Patchy drizzle before 1pm. Areas of dense fog. Otherwise, cloudy, with a high near 46. Northeast wind 5 to 10 mph.
Thursday Night
Widespread fog, mainly after midnight. Otherwise, cloudy, with a low around 39. Northeast wind around 5 mph becoming southeast after midnight. Winds could gust as high as 10 mph.
Friday
A chance of showers and thunderstorms before 9am, then showers and possibly a thunderstorm between 9am and noon, then a slight chance of showers and thunderstorms after noon. Areas of fog before noon. High near 69. Southeast wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 52. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Saturday
A 20 percent chance of showers before 9am. Partly sunny, with a high near 57. Breezy.
Saturday Night
Mostly clear, with a low around 33.
Sunday
Sunny, with a high near 60. Breezy.
Sunday Night
Mostly clear, with a low around 45.
Monday
Sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Showers likely. Partly sunny, with a high near 65.
Tuesday Night
Showers. Cloudy, with a low around 40.
Wednesday
A chance of rain. Mostly cloudy, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wonder Lake IL
 42.41°N 88.34°W
Last Update:
5:21 am CST Mar 5, 2026
Forecast Valid:
5am CST Mar 5, 2026-6pm CDT Mar 11, 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