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

13°F

-11°C

Humidity 74%
Wind Speed SW 7 mph
Barometer 30.22 in (1025.3 mb)
Dewpoint 6°F (-14°C)
Visibility 10.00 mi
Wind Chill3°F (-16°C)
Last update 5 Feb 1:51 am CST
Extended Forecast for

Round Lake Heights IL

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 15. Southwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 15 °F

    Mostly Cloudy

  • Thursday

    Thursday: Snow likely before 8am, then snow showers likely between 8am and 3pm. Cloudy, with a high near 30. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 30 °F

    Snow Likely
    then Isolated
    Snow Showers

  • Thursday Night

    Thursday Night: A chance of snow showers after midnight, mixing with freezing rain after 3am. Mostly cloudy, with a steady temperature around 29. West wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.

    Low: 29 °F

    Cloudy then
    Chance Wintry
    Mix

  • Friday

    Friday: A 20 percent chance of snow showers. Mostly cloudy, with a high near 38. Breezy, with a north northwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 38 °F

    Slight Chance
    Snow Showers
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 7. Blustery, with a north wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.

    Low: 7 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 23.

    High: 23 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 17.

    Low: 17 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 34.

    High: 34 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 15. Southwest wind around 5 mph, with gusts as high as 10 mph.
Thursday
Snow likely before 8am, then snow showers likely between 8am and 3pm. Cloudy, with a high near 30. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
A chance of snow showers after midnight, mixing with freezing rain after 3am. Mostly cloudy, with a steady temperature around 29. West wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.
Friday
A 20 percent chance of snow showers. Mostly cloudy, with a high near 38. Breezy, with a north northwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Mostly clear, with a low around 7. Blustery, with a north wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Saturday
Mostly sunny, with a high near 23.
Saturday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 17.
Sunday
Mostly cloudy, with a high near 34.
Sunday Night
Partly cloudy, with a low around 22.
Monday
Partly sunny, with a high near 43.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Partly sunny, with a high near 42.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
A chance of showers. Partly sunny, with a high near 40.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Round Lake Heights IL
 42.38°N 88.11°W
Last Update:
11:46 pm CST Feb 4, 2026
Forecast Valid:
2am CST Feb 5, 2026-6pm CST Feb 11, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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