National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

54°F

12°C

Humidity 69%
Wind Speed S 12 mph
Barometer 29.87 in (1011.2 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 4 Nov 10:51 pm CST
Extended Forecast for

Round Lake ILSimilar City Names

  • Tonight

    Tonight: Partly cloudy, with a low around 50. Southwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 56. Breezy, with a northwest wind 15 to 20 mph becoming west northwest 10 to 15 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 56 °F

    Becoming
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 30. West northwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 15 mph.

    Low: 30 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 55. Light and variable wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    High: 55 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Rain likely, mainly after midnight. Cloudy, with a low around 46. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    Low: 46 °F

    Chance Rain
    then Rain
    Likely

  • Friday

    Friday: A 30 percent chance of rain before noon. Partly sunny, with a high near 62.

    High: 62 °F

    Chance Rain
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of rain after noon. Mostly cloudy, with a high near 48.

    High: 48 °F

    Partly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Rain likely. Mostly cloudy, with a low around 30.

    Low: 30 °F

    Rain Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 50. Southwest wind around 15 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 56. Breezy, with a northwest wind 15 to 20 mph becoming west northwest 10 to 15 mph in the afternoon. Winds could gust as high as 35 mph.
Wednesday Night
Mostly clear, with a low around 30. West northwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 15 mph.
Thursday
Partly sunny, with a high near 55. Light and variable wind becoming south 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Rain likely, mainly after midnight. Cloudy, with a low around 46. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Friday
A 30 percent chance of rain before noon. Partly sunny, with a high near 62.
Friday Night
Mostly cloudy, with a low around 35.
Saturday
A chance of rain after noon. Mostly cloudy, with a high near 48.
Saturday Night
Rain likely. Mostly cloudy, with a low around 30.
Sunday
A chance of rain before noon. Partly sunny, with a high near 39.
Sunday Night
Partly cloudy, with a low around 23.
Monday
Sunny, with a high near 38.
Monday Night
Partly cloudy, with a low around 23.
Veterans Day
Partly sunny, with a high near 43.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Round Lake ILSimilar City Names
 42.35°N 88.11°W
Last Update:
9:36 pm CST Nov 4, 2025
Forecast Valid:
11pm CST Nov 4, 2025-6pm CST Nov 11, 2025
 
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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