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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Shallow Fog

40°F

4°C

Humidity 100%
Wind Speed Calm
Barometer 30.39 in (1029.6 mb)
Dewpoint 40°F (4°C)
Visibility 3.00 mi
Last update 20 Oct 6:51 am CDT
Extended Forecast for

Gurnee IL

Dense Fog Advisory October 20, 06:55am until October 20, 09:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory October 20, 06:55am until October 20, 09:00am

    NOW until 9:00am Tue

    Dense Fog Advisory

  • Today

    High: 66 °F

    Areas Dense
    Fog then
    Sunny

  • Tonight

    Tonight: Areas of dense fog after 4am. Otherwise, partly cloudy, with a low around 42. East wind around 5 mph becoming calm in the evening.

    Low: 42 °F

    Mostly Clear
    then Areas
    Dense Fog

  • Wednesday

    Wednesday: Areas of dense fog before 8am. Otherwise, mostly sunny, with a high near 70. Calm wind becoming south around 5 mph in the afternoon.

    High: 70 °F

    Areas Dense
    Fog then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 46. Calm wind.

    Low: 46 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 68. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Today
Areas of dense fog before 9am. Otherwise, sunny, with a high near 66. Light and variable wind becoming east 5 to 10 mph in the afternoon.
Tonight
Areas of dense fog after 4am. Otherwise, partly cloudy, with a low around 42. East wind around 5 mph becoming calm in the evening.
Wednesday
Areas of dense fog before 8am. Otherwise, mostly sunny, with a high near 70. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 46. Calm wind.
Thursday
Sunny, with a high near 68. Calm wind becoming east northeast around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 49.
Friday
Sunny, with a high near 65.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 66.
Saturday Night
Mostly cloudy, with a low around 51.
Sunday
Partly sunny, with a high near 69.
Sunday Night
Mostly cloudy, with a low around 48.
Monday
Mostly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Gurnee IL
 42.37°N 87.93°W
Last Update:
5:46 am CDT Oct 20, 2026
Forecast Valid:
6am CDT Oct 20, 2026-6pm CDT Oct 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation