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

26°F

-3°C

Humidity 84%
Wind Speed NE 10 mph
Barometer 30.23 in (1025.0 mb)
Dewpoint 22°F (-6°C)
Visibility 9.00 mi
Wind Chill16°F (-9°C)
Last update 28 Feb 3:51 pm CST
Extended Forecast for

Round Lake Heights IL

  • This Afternoon

    This Afternoon: A 30 percent chance of snow. Cloudy, with a steady temperature around 30. Northeast wind around 10 mph, with gusts as high as 15 mph.

    High: 30 °F

    Chance Snow

  • Tonight

    Tonight: Isolated snow showers after midnight. Mostly cloudy, with a low around 22. North northeast wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.

    Low: 22 °F

    Cloudy then
    Isolated Snow
    Showers

  • Sunday

    Sunday: Scattered flurries before noon. Mostly sunny, with a high near 31. North wind 5 to 10 mph becoming east in the afternoon.

    High: 31 °F

    Scattered
    Flurries

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 20. East wind around 5 mph.

    Low: 20 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 41. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 41 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Rain likely, possibly mixed with snow, mainly after midnight. Mostly cloudy, with a low around 31. Chance of precipitation is 60%.

    Low: 31 °F

    Slight Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Tuesday

    Tuesday: Rain likely, mainly before noon. Cloudy, with a high near 43. Chance of precipitation is 70%.

    High: 43 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: A chance of rain before midnight. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Chance Rain
    then Partly
    Cloudy

  • Wednesday

    Wednesday: A chance of rain. Mostly cloudy, with a high near 48.

    High: 48 °F

    Chance Rain

Detailed Forecast

This Afternoon
A 30 percent chance of snow. Cloudy, with a steady temperature around 30. Northeast wind around 10 mph, with gusts as high as 15 mph.
Tonight
Isolated snow showers after midnight. Mostly cloudy, with a low around 22. North northeast wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Sunday
Scattered flurries before noon. Mostly sunny, with a high near 31. North wind 5 to 10 mph becoming east in the afternoon.
Sunday Night
Partly cloudy, with a low around 20. East wind around 5 mph.
Monday
Mostly sunny, with a high near 41. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Rain likely, possibly mixed with snow, mainly after midnight. Mostly cloudy, with a low around 31. Chance of precipitation is 60%.
Tuesday
Rain likely, mainly before noon. Cloudy, with a high near 43. Chance of precipitation is 70%.
Tuesday Night
A chance of rain before midnight. Mostly cloudy, with a low around 32.
Wednesday
A chance of rain. Mostly cloudy, with a high near 48.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 38.
Thursday
A chance of rain. Mostly cloudy, with a high near 56.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 43.
Friday
Rain likely. Mostly cloudy, with a high near 62.
Friday Night
Rain likely. Mostly cloudy, with a low around 43.
Saturday
A chance of rain. Mostly cloudy, with a high near 56.
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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:
4:26 pm CST Feb 28, 2026
Forecast Valid:
4pm CST Feb 28, 2026-6pm CST Mar 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