Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fog/Mist

39°F

4°C

Humidity 100%
Wind Speed E 7 mph
Barometer 30.01 in (1016.9 mb)
Dewpoint 39°F (4°C)
Visibility 2.50 mi
Wind Chill34°F (1°C)
Last update 5 Mar 5:51 pm CST
Extended Forecast for

Round Lake Heights IL

Dense Fog Advisory March 5, 06:40pm until March 6, 06:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory March 5, 06:40pm until March 6, 06:00am

    NOW until 6:00am Fri

    Dense Fog Advisory

  • Tonight

    Low: 40 °F

    Dense Fog

  • Friday

    Friday: A chance of showers and thunderstorms before 9am, then showers and possibly a thunderstorm between 9am and noon, then a chance of showers and thunderstorms after noon.  Widespread fog, mainly before 9am. High near 67. 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%. New rainfall amounts between a quarter and half of an inch possible.

    High: 67 °F

    Showers and
    Fog then
    Chance
    T-storms and
    Patchy Fog

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight.  Low around 59. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 59 °F

    Chance
    T-storms then
    Showers and
    Breezy

  • Saturday

    Saturday: A 30 percent chance of showers before 9am.  Mostly cloudy, with a high near 60. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 60 °F

    Breezy.
    Chance
    Showers then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34. West wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 34 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 61. Breezy.

    High: 61 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

Detailed Forecast

Tonight
Widespread dense fog, mainly after midnight. Otherwise, cloudy, with a low around 40. Northeast wind around 5 mph becoming east southeast after midnight.
Friday
A chance of showers and thunderstorms before 9am, then showers and possibly a thunderstorm between 9am and noon, then a chance of showers and thunderstorms after noon. Widespread fog, mainly before 9am. High near 67. 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%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 59. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A 30 percent chance of showers before 9am. Mostly cloudy, with a high near 60. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 34. West wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday
Sunny, with a high near 61. Breezy.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Showers likely after noon. Partly sunny, with a high near 69.
Tuesday Night
Showers. Mostly cloudy, with a low around 43.
Wednesday
A chance of showers. Mostly cloudy, with a high near 54.
Wednesday Night
Partly cloudy, with a low around 27.
Thursday
Mostly sunny, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
Round Lake Heights IL
 42.38°N 88.11°W
3:06 pm CST Mar 5, 2026
6pm CST Mar 5, 2026-6pm CDT Mar 12, 2026
 
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Additional Resources

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