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.

Fair

74°F

23°C

Humidity 45%
Wind Speed W 13 mph
Barometer 29.84 in (1010.0 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 21 Apr 5:51 pm CDT
Extended Forecast for

Third Lake IL

  • Tonight

    Tonight: Mostly clear, with a low around 48. West southwest wind 5 to 10 mph becoming north northeast after midnight. Winds could gust as high as 15 mph.

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 66. Northeast wind 5 to 10 mph.

    High: 66 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 50. East wind around 5 mph becoming south after midnight. Winds could gust as high as 10 mph.

    Low: 50 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 78. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 78 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. South wind around 15 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Partly Cloudy
    then Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 74. Chance of precipitation is 60%.

    High: 74 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 48.

    Low: 48 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 48. West southwest wind 5 to 10 mph becoming north northeast after midnight. Winds could gust as high as 15 mph.
Wednesday
Sunny, with a high near 66. Northeast wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 50. East wind around 5 mph becoming south after midnight. Winds could gust as high as 10 mph.
Thursday
Mostly sunny, with a high near 78. South wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. South wind around 15 mph, with gusts as high as 20 mph.
Friday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 74. Chance of precipitation is 60%.
Friday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 44.
Sunday
Mostly sunny, with a high near 61.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 47.
Monday
A chance of showers. Mostly cloudy, with a high near 64.
Monday Night
A chance of showers. Mostly cloudy, with a low around 47.
Tuesday
Mostly cloudy, with a high near 61.
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:
4:11 pm CDT Apr 21, 2026
Forecast Valid:
6pm CDT Apr 21, 2026-6pm CDT Apr 28, 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