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.

Thunderstorm in Vicinity Light Rain

66°F

19°C

Humidity 84%
Wind Speed SW 20 G 26 mph
Barometer 29.64 in (1003.6 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 2 Apr 8:51 pm CDT
Extended Forecast for

Round Lake IL

  • Tonight

    Tonight: Showers and thunderstorms before midnight, then isolated showers between midnight and 1am. Low around 45. Breezy, with a west wind 15 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 45 °F

    Breezy.
    T-storms then
    Isolated
    Showers

  • Friday

    Friday: Partly sunny, with a high near 54. West wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 15 mph.

    High: 54 °F

    Partly Sunny

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Temperature falling to near 39 by 9pm, then rising to around 49 during the remainder of the night. East northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 39 °F⇑

    Showers

  • Saturday

    Saturday: A 40 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 60. Breezy, with a west southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 60 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 34 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms before midnight, then isolated showers between midnight and 1am. Low around 45. Breezy, with a west wind 15 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Partly sunny, with a high near 54. West wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 15 mph.
Friday Night
Showers and possibly a thunderstorm. Temperature falling to near 39 by 9pm, then rising to around 49 during the remainder of the night. East northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A 40 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 60. Breezy, with a west southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Mostly cloudy, with a low around 34. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
Partly sunny, with a high near 50.
Sunday Night
Partly cloudy, with a low around 34.
Monday
Partly sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 26.
Tuesday
Mostly sunny, with a high near 42.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Mostly cloudy, with a high near 59.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 46.
Thursday
A chance of showers. Partly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Round Lake IL
 42.33°N 88.11°W
Last Update:
9:06 pm CDT Apr 2, 2026
Forecast Valid:
9pm CDT Apr 2, 2026-6pm CDT Apr 9, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation