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

11°F

-12°C

Humidity 81%
Wind Speed SW 7 mph
Barometer 30.28 in (1027.7 mb)
Dewpoint 6°F (-14°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 1 Feb 7:51 am CST
Extended Forecast for

Round Lake IL

  • Today

    Today: Increasing clouds, with a high near 27. Wind chill values as low as -4. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 27 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Snow likely, mainly between 9pm and 3am. Cloudy, with a steady temperature around 21. South southwest wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 21 °F

    Chance Snow
    then Snow
    Likely

  • Monday

    Monday: Mostly cloudy, with a high near 27. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 27 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 12. West northwest wind around 5 mph.

    Low: 12 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 25. North wind 5 to 10 mph.

    High: 25 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 27. Wind chill values as low as -4. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Tonight
Snow likely, mainly between 9pm and 3am. Cloudy, with a steady temperature around 21. South southwest wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday
Mostly cloudy, with a high near 27. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 12. West northwest wind around 5 mph.
Tuesday
Mostly sunny, with a high near 25. North wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 8.
Wednesday
Mostly sunny, with a high near 25.
Wednesday Night
Partly cloudy, with a low around 11.
Thursday
Partly sunny, with a high near 33.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 25.
Friday
A chance of snow. Mostly cloudy, with a high near 33.
Friday Night
Partly cloudy, with a low around 6.
Saturday
Mostly sunny, with a high near 19.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Round Lake IL
 42.33°N 88.11°W
Last Update:
7:56 am CST Feb 1, 2026
Forecast Valid:
8am CST Feb 1, 2026-6pm CST Feb 7, 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