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Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fog/Mist

68°F

20°C

Humidity 100%
Wind Speed Calm
Barometer 29.89 in (1011.2 mb)
Dewpoint 68°F (20°C)
Visibility 1.75 mi
Last update 12 Aug 11:51 pm CDT
Extended Forecast for

Round Lake Beach IL

  • Overnight

    Overnight: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Patchy Fog

  • Thursday

    Thursday: A slight chance of showers between 11am and noon, then a chance of showers and thunderstorms after noon. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 77. Light east northeast wind becoming east 5 to 10 mph in the morning. Chance of precipitation is 50%.

    High: 77 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 66. East northeast wind around 5 mph, with gusts as high as 10 mph.

    Low: 66 °F

    Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers before 1pm. Mostly cloudy, with a high near 77. East wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 77 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. East wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 66 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 81.

    High: 81 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 81.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 67. Calm wind.
Thursday
A slight chance of showers between 11am and noon, then a chance of showers and thunderstorms after noon. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 77. Light east northeast wind becoming east 5 to 10 mph in the morning. Chance of precipitation is 50%.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 66. East northeast wind around 5 mph, with gusts as high as 10 mph.
Friday
A 40 percent chance of showers before 1pm. Mostly cloudy, with a high near 77. East wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. East wind 5 to 10 mph. Chance of precipitation is 60%.
Saturday
A 50 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 81.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 81.
Sunday Night
Mostly cloudy, with a low around 63.
Monday
Mostly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
A chance of showers. Partly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Round Lake Beach IL
 42.37°N 88.08°W
Last Update:
9:46 pm CDT Aug 12, 2026
Forecast Valid:
12am CDT Aug 13, 2026-6pm CDT Aug 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation