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

47°F

8°C

Humidity 86%
Wind Speed SE 6 mph
Barometer 30.28 in (1026.0 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 10 Apr 2:51 pm CDT
Extended Forecast for

Third Lake IL

  • This Afternoon

    This Afternoon: Partly sunny, with a steady temperature around 47. North northeast wind around 10 mph, with gusts as high as 15 mph.

    High: 47 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 33. East northeast wind around 5 mph becoming calm in the evening.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: Increasing clouds, with a high near 49. Light east wind becoming east southeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 49 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 44. East southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 44 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 74. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    High: 74 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Cloudy, with a low around 61. Chance of precipitation is 70%.

    Low: 61 °F

    Showers
    Likely

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78.

    High: 78 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80.

    High: 80 °F

    Mostly Cloudy
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Partly sunny, with a steady temperature around 47. North northeast wind around 10 mph, with gusts as high as 15 mph.
Tonight
Partly cloudy, with a low around 33. East northeast wind around 5 mph becoming calm in the evening.
Saturday
Increasing clouds, with a high near 49. Light east wind becoming east southeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 44. East southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Sunday
A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 74. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Sunday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Cloudy, with a low around 61. Chance of precipitation is 70%.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78.
Monday Night
A chance of showers. Mostly cloudy, with a low around 62.
Tuesday
A chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 60.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 73.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 52.
Thursday
A chance of showers. Partly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Third Lake IL
 42.37°N 87.99°W
Last Update:
2:51 pm CDT Apr 10, 2026
Forecast Valid:
3pm CDT Apr 10, 2026-6pm CDT Apr 16, 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