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.

Overcast

60°F

16°C

Humidity 78%
Wind Speed NE 7 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 14 Jun 8:51 am CDT
Extended Forecast for

Round Lake ILSimilar City Names

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 74. East northeast wind around 10 mph.

    High: 74 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 56. Northeast wind 5 to 10 mph.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 79. East wind 5 to 10 mph.

    High: 79 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 60. East wind around 5 mph, with gusts as high as 10 mph.

    Low: 60 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 83. South wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 87.

    High: 87 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms. Mostly cloudy, with a high near 83.

    High: 83 °F

    T-storms

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 74. East northeast wind around 10 mph.
Tonight
Mostly clear, with a low around 56. Northeast wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 79. East wind 5 to 10 mph.
Sunday Night
Mostly cloudy, with a low around 60. East wind around 5 mph, with gusts as high as 10 mph.
Monday
A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 83. South wind 5 to 10 mph. Chance of precipitation is 30%.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 87.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67.
Wednesday
Showers and thunderstorms. Mostly cloudy, with a high near 83.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Juneteenth
Mostly sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 81.
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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:
8:56 am CDT Jun 14, 2025
Forecast Valid:
9am CDT Jun 14, 2025-6pm CDT Jun 20, 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