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

16°F

-9°C

Humidity 67%
Wind Speed NW 7 mph
Barometer 30.34 in (1029.6 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill6°F (-14°C)
Last update 4 Feb 2:51 am CST
Extended Forecast for

Round Lake Heights IL

  • Overnight

    Overnight: Partly cloudy early, then becoming cloudy, with a low around 10. North northwest wind around 5 mph.

    Low: 10 °F

    Becoming
    Cloudy

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 26. Wind chill values as low as 1. North northwest wind around 5 mph.

    High: 26 °F

    Gradual
    Clearing

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 12. Calm wind becoming west southwest around 5 mph after midnight. Winds could gust as high as 10 mph.

    Low: 12 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Scattered snow showers between 9am and 3pm. Cloudy, with a high near 31. Southwest wind 5 to 15 mph. Chance of precipitation is 40%.

    High: 31 °F

    Scattered
    Snow Showers

  • Thursday Night

    Thursday Night: Scattered snow showers after midnight, mixing with freezing rain after 3am. Mostly cloudy, with a low around 26. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 26 °F

    Mostly Cloudy
    then
    Scattered
    Wintry Mix

  • Friday

    Friday: Mostly cloudy, with a high near 39.

    High: 39 °F

    Mostly Cloudy

  • Friday Night

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

    Low: 11 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy early, then becoming cloudy, with a low around 10. North northwest wind around 5 mph.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 26. Wind chill values as low as 1. North northwest wind around 5 mph.
Wednesday Night
Increasing clouds, with a low around 12. Calm wind becoming west southwest around 5 mph after midnight. Winds could gust as high as 10 mph.
Thursday
Scattered snow showers between 9am and 3pm. Cloudy, with a high near 31. Southwest wind 5 to 15 mph. Chance of precipitation is 40%.
Thursday Night
Scattered snow showers after midnight, mixing with freezing rain after 3am. Mostly cloudy, with a low around 26. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Friday
Mostly cloudy, with a high near 39.
Friday Night
Partly cloudy, with a low around 11.
Saturday
Mostly sunny, with a high near 28.
Saturday Night
Mostly cloudy, with a low around 21.
Sunday
Partly sunny, with a high near 33.
Sunday Night
Partly cloudy, with a low around 20.
Monday
Mostly sunny, with a high near 38.
Monday Night
Mostly cloudy, with a low around 27.
Tuesday
Partly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Round Lake Heights IL
 42.38°N 88.11°W
Last Update:
2:46 am CST Feb 4, 2026
Forecast Valid:
3am CST Feb 4, 2026-6pm CST Feb 10, 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