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.

Mostly Cloudy

76°F

24°C

Humidity 69%
Wind Speed E 8 mph
Barometer 30.14 in (1019.7 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 28 Aug 1:51 pm CDT
Extended Forecast for

Round Lake ILSimilar City Names

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 81. Southwest wind around 5 mph.

    High: 81 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 60. South southwest wind around 5 mph.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Increasing clouds, with a high near 79. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 79 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 68. South wind around 10 mph, with gusts as high as 15 mph.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers, mainly before 7am. Partly sunny, with a high near 86. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 86 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71.

    Low: 71 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: Partly sunny, with a high near 89.

    High: 89 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 74.

    Low: 74 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 89.

    High: 89 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 81. Southwest wind around 5 mph.
Tonight
Partly cloudy, with a low around 60. South southwest wind around 5 mph.
Saturday
Increasing clouds, with a high near 79. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 68. South wind around 10 mph, with gusts as high as 15 mph.
Sunday
A 30 percent chance of showers, mainly before 7am. Partly sunny, with a high near 86. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71.
Monday
Partly sunny, with a high near 89.
Monday Night
Mostly cloudy, with a low around 74.
Tuesday
Partly sunny, with a high near 89.
Tuesday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 72.
Wednesday
Mostly sunny, with a high near 89.
Wednesday Night
Partly cloudy, with a low around 70.
Thursday
Mostly sunny, with a high near 86.
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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:
2:16 pm CDT Aug 28, 2026
Forecast Valid:
2pm CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
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Additional Resources

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