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.

Fair

21°F

-6°C

Humidity 43%
Wind Speed NW 9 mph
Barometer 30.16 in (1023.5 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 17 Mar 2:51 pm CDT
Extended Forecast for

Round Lake Heights IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 23. West southwest wind around 10 mph.

    High: 23 °F

    Partly Sunny

  • Tonight

    Tonight: Snow, mainly after 11pm. Low around 17. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    Low: 17 °F

    Chance Snow
    then Snow

  • Wednesday

    Wednesday: A chance of snow and freezing rain before 7am. Mostly cloudy, with a high near 38. Southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.

    High: 38 °F

    Chance Wintry
    Mix then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 34. Southwest wind around 5 mph.

    Low: 34 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 46. South southwest wind around 5 mph becoming north northeast in the afternoon. Winds could gust as high as 10 mph.

    High: 46 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 54.

    High: 54 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 23. West southwest wind around 10 mph.
Tonight
Snow, mainly after 11pm. Low around 17. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Wednesday
A chance of snow and freezing rain before 7am. Mostly cloudy, with a high near 38. Southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.
Wednesday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 34. Southwest wind around 5 mph.
Thursday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 46. South southwest wind around 5 mph becoming north northeast in the afternoon. Winds could gust as high as 10 mph.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
Mostly cloudy, with a high near 54.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 65.
Saturday Night
Mostly cloudy, with a low around 44.
Sunday
Partly sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 28.
Monday
Partly sunny, with a high near 40.
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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 pm CDT Mar 17, 2026
Forecast Valid:
3pm CDT Mar 17, 2026-6pm CDT Mar 23, 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