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.

Fog/Mist

60°F

16°C

Humidity 100%
Wind Speed W 5 mph
Barometer 29.89 in (1011.6 mb)
Dewpoint 60°F (16°C)
Visibility 6.00 mi
Last update 25 Jun 1:51 am CDT
Extended Forecast for

Round Lake IL

  • Overnight

    Overnight: Areas of fog. Otherwise, mostly cloudy, with a low around 59. West southwest wind around 5 mph.

    Low: 59 °F

    Areas Fog

  • Thursday

    Thursday: Mostly sunny, with a high near 77. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 55. North wind around 5 mph becoming calm in the evening.

    Low: 55 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers between noon and 1pm. Mostly cloudy, with a high near 71. East wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.

    High: 71 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 57. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 57 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: Partly sunny, with a high near 86.

    High: 86 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

Detailed Forecast

Overnight
Areas of fog. Otherwise, mostly cloudy, with a low around 59. West southwest wind around 5 mph.
Thursday
Mostly sunny, with a high near 77. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday Night
Mostly cloudy, with a low around 55. North wind around 5 mph becoming calm in the evening.
Friday
A slight chance of showers between noon and 1pm. Mostly cloudy, with a high near 71. East wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 57. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62.
Sunday
Partly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 74.
Monday
Mostly sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Mostly sunny and hot, with a high near 95.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Round Lake IL
 42.35°N 88.11°W
Last Update:
1:29 am CDT Jun 25, 2026
Forecast Valid:
2am CDT Jun 25, 2026-6pm CDT Jul 1, 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