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

45°F

7°C

Humidity 68%
Wind Speed S 13 mph
Barometer 30.44 in (1031.7 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 11 Apr 9:51 am CDT
Extended Forecast for

Third Lake IL

  • Today

    Today: Increasing clouds, with a high near 53. East southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 53 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A 50 percent chance of showers, mainly after 9pm. Mostly cloudy, with a low around 45. East southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Chance
    Showers

  • Sunday

    Sunday: Scattered showers and thunderstorms, then periods of showers and possibly a thunderstorm after 4pm. High near 74. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Breezy.
    Scattered
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Periods of showers and possibly a thunderstorm. Low around 60. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

    Low: 60 °F

    Showers and
    Breezy

  • Monday

    Monday: A chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. Southwest wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 77 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 80.

    High: 80 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Showers

  • Wednesday

    Wednesday: A chance of showers. Partly sunny, with a high near 77.

    High: 77 °F

    Chance
    Showers

Detailed Forecast

Today
Increasing clouds, with a high near 53. East southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Tonight
A 50 percent chance of showers, mainly after 9pm. Mostly cloudy, with a low around 45. East southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Scattered showers and thunderstorms, then periods of showers and possibly a thunderstorm after 4pm. High near 74. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Periods of showers and possibly a thunderstorm. Low around 60. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Monday
A chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. Southwest wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 80.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 61.
Wednesday
A chance of showers. Partly sunny, with a high near 77.
Wednesday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 56.
Thursday
A chance of showers. Partly sunny, with a high near 76.
Thursday Night
A chance of showers. Partly cloudy, with a low around 56.
Friday
A chance of showers. Partly sunny, with a high near 74.
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:
10:11 am CDT Apr 11, 2026
Forecast Valid:
10am CDT Apr 11, 2026-6pm CDT Apr 17, 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