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

34°F

1°C

Humidity 82%
Wind Speed SW 12 mph
Barometer 29.85 in (1011.5 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 13 Jan 1:51 am CST
Extended Forecast for

Round Lake Heights IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 34. Southwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 34 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 49. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 49 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: A slight chance of rain showers before 1am, then a slight chance of rain and snow showers between 1am and 2am, then a slight chance of snow showers after 2am. Mostly cloudy, with a low around 24. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    Low: 24 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow and
    Blustery

  • Wednesday

    Wednesday: A 40 percent chance of snow showers, mainly before noon. Mostly cloudy, with a high near 26. Blustery, with a north northwest wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 26 °F

    Chance Snow
    Showers and
    Blustery

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 12. North northwest wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 12 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 19.

    Low: 19 °F

    Chance Snow

  • Friday

    Friday: Snow likely. Cloudy, with a high near 32.

    High: 32 °F

    Snow Likely

  • Friday Night

    Friday Night: A chance of snow. Mostly cloudy, with a low around 15.

    Low: 15 °F

    Chance Snow

Detailed Forecast

Overnight
Mostly cloudy, with a low around 34. Southwest wind around 10 mph, with gusts as high as 15 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 49. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
A slight chance of rain showers before 1am, then a slight chance of rain and snow showers between 1am and 2am, then a slight chance of snow showers after 2am. Mostly cloudy, with a low around 24. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Wednesday
A 40 percent chance of snow showers, mainly before noon. Mostly cloudy, with a high near 26. Blustery, with a north northwest wind 20 to 25 mph, with gusts as high as 35 mph.
Wednesday Night
Partly cloudy, with a low around 12. North northwest wind 10 to 15 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 25.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 19.
Friday
Snow likely. Cloudy, with a high near 32.
Friday Night
A chance of snow. Mostly cloudy, with a low around 15.
Saturday
A chance of snow. Mostly cloudy, with a high near 19.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 5.
Sunday
Mostly cloudy, with a high near 16.
Sunday Night
Mostly cloudy, with a low around 5.
M.L.King Day
Partly sunny, with a high near 18.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Round Lake Heights IL
 42.38°N 88.11°W
Last Update:
12:46 am CST Jan 13, 2026
Forecast Valid:
2am CST Jan 13, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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