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

25°F

-4°C

Humidity 85%
Wind Speed N 10 mph
Barometer 30.27 in (1026.7 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 28 Feb 6:51 pm CST
Extended Forecast for

Third Lake IL

  • Tonight

    Tonight: A slight chance of snow between 11pm and midnight, then a slight chance of snow showers after midnight. Cloudy, with a low around 23. North northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 23 °F

    Slight Chance
    Snow

  • Sunday

    Sunday: A slight chance of snow showers before 8am, then a chance of flurries between 8am and noon. Partly sunny, with a high near 30. East northeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.

    High: 30 °F

    Slight Chance
    Snow Showers
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 21. East southeast wind around 5 mph.

    Low: 21 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 40. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 40 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Rain likely, possibly mixed with snow, mainly after midnight. Mostly cloudy, with a low around 32. Southeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 60%.

    Low: 32 °F

    Mostly Cloudy
    then
    Rain/Snow
    Likely

  • Tuesday

    Tuesday: Rain likely, mainly before noon. Cloudy, with a high near 42. Chance of precipitation is 70%.

    High: 42 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain, mainly before midnight. Partly cloudy, with a low around 33.

    Low: 33 °F

    Chance Rain

  • Wednesday

    Wednesday: A chance of rain. Mostly cloudy, with a high near 47.

    High: 47 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain

Detailed Forecast

Tonight
A slight chance of snow between 11pm and midnight, then a slight chance of snow showers after midnight. Cloudy, with a low around 23. North northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Sunday
A slight chance of snow showers before 8am, then a chance of flurries between 8am and noon. Partly sunny, with a high near 30. East northeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 21. East southeast wind around 5 mph.
Monday
Mostly sunny, with a high near 40. 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 32. Southeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 60%.
Tuesday
Rain likely, mainly before noon. Cloudy, with a high near 42. Chance of precipitation is 70%.
Tuesday Night
A 30 percent chance of rain, mainly before midnight. Partly cloudy, with a low around 33.
Wednesday
A chance of rain. Mostly cloudy, with a high near 47.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 38.
Thursday
A chance of rain. Mostly cloudy, with a high near 53.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 42.
Friday
Rain likely. Mostly cloudy, with a high near 62.
Friday Night
Rain likely. Mostly cloudy, with a low around 42.
Saturday
A chance of rain. Mostly cloudy, with a high near 56.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Third Lake IL
 42.37°N 87.99°W
Last Update:
6:00 pm CST Feb 28, 2026
Forecast Valid:
7pm CST Feb 28, 2026-6pm CST Mar 7, 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