Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

26°F

-3°C

Humidity 46%
Wind Speed Calm
Barometer 29.78 in (1010.1 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Last update 25 Feb 6:51 pm CST
Extended Forecast for

Round Lake Heights IL

  • Tonight

    Tonight: Partly cloudy, with a low around 17. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 17 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 41. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 41 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30. Southwest wind 5 to 10 mph.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 59. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 59 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 28. West southwest wind 5 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph.

    Low: 28 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 50 percent chance of snow, mainly after noon.  Cloudy, with a high near 35.

    High: 35 °F

    Slight Chance
    Snow then
    Chance Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before midnight.  Mostly cloudy, with a low around 18.

    Low: 18 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 29.

    High: 29 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of snow before midnight.  Mostly cloudy, with a low around 19.

    Low: 19 °F

    Chance Snow
    then Partly
    Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 17. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 41. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 30. Southwest wind 5 to 10 mph.
Friday
Sunny, with a high near 59. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Friday Night
Mostly cloudy, with a low around 28. West southwest wind 5 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
Saturday
A 50 percent chance of snow, mainly after noon. Cloudy, with a high near 35.
Saturday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 18.
Sunday
Mostly cloudy, with a high near 29.
Sunday Night
A chance of snow before midnight. Mostly cloudy, with a low around 19.
Monday
Mostly sunny, with a high near 34.
Monday Night
Mostly cloudy, with a low around 22.
Tuesday
A chance of rain and snow. Partly sunny, with a high near 40.
Tuesday Night
Mostly clear, with a low around 26.
Wednesday
Sunny, with a high near 46.
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ABOUT THIS FORECAST

 
Point Forecast:
Round Lake Heights IL
 42.38°N 88.11°W
7:46 pm CST Feb 25, 2026
7pm CST Feb 25, 2026-6pm CST Mar 4, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database