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.

Overcast

37°F

3°C

Humidity 86%
Wind Speed NE 14 mph
Barometer 29.48 in (998.8 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 19 Feb 8:51 pm CST
Extended Forecast for

Round Lake Heights IL

Wind Advisory February 20, 06:00am until February 20, 04:00pm
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 1am, then a chance of showers. Patchy fog after midnight. Steady temperature around 42. Northeast wind 10 to 15 mph becoming southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 42 °F

    Showers and
    Patchy Fog

  • Friday

    Friday: Rain likely, possibly mixed with snow showers before 8am, then snow showers likely between 8am and noon, then a chance of flurries after noon. Mostly cloudy, with a temperature falling to around 32 by 5pm. Breezy, with a west wind 15 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 36 °F⇓

    Breezy.
    Rain/Snow
    Likely then
    Chance
    Flurries

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25. West wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 25 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 36. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 36 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 24. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A 20 percent chance of snow before noon. Mostly cloudy, with a high near 30.

    High: 30 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday Night

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

    Low: 17 °F

    Slight Chance
    Snow

  • Monday

    Monday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Showers and possibly a thunderstorm before 1am, then a chance of showers. Patchy fog after midnight. Steady temperature around 42. Northeast wind 10 to 15 mph becoming southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Rain likely, possibly mixed with snow showers before 8am, then snow showers likely between 8am and noon, then a chance of flurries after noon. Mostly cloudy, with a temperature falling to around 32 by 5pm. Breezy, with a west wind 15 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
Partly cloudy, with a low around 25. West wind 10 to 15 mph, with gusts as high as 30 mph.
Saturday
Partly sunny, with a high near 36. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 24. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
A 20 percent chance of snow before noon. Mostly cloudy, with a high near 30.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 17.
Monday
Partly sunny, with a high near 30.
Monday Night
Mostly cloudy, with a low around 17.
Tuesday
Mostly cloudy, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Partly sunny, with a high near 45.
Wednesday Night
Partly cloudy, with a low around 23.
Thursday
Mostly sunny, with a high near 44.
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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:
8:21 pm CST Feb 19, 2026
Forecast Valid:
9pm CST Feb 19, 2026-6pm CST Feb 26, 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