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

41°F

5°C

Humidity 67%
Wind Speed W 8 mph
Barometer 29.56 in (1001.4 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 14 Jan 1:51 am CST
Extended Forecast for

Third Lake IL

  • Overnight

    Overnight: A 50 percent chance of snow after 3am. Cloudy, with a low around 23. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 23 °F

    Chance Snow
    and Blustery

  • Wednesday

    Wednesday: A 50 percent chance of snow, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 20 by 5pm. Blustery, with a north northwest wind 20 to 25 mph, with gusts as high as 30 mph.

    High: 25 °F⇓

    Blustery.
    Chance Snow
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 13. Wind chill values as low as 1. Blustery, with a north northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 13 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 25. Wind chill values as low as 1. Northwest wind around 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 25 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Snow. Low around 21. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    Low: 21 °F

    Snow Likely
    then Snow

  • Friday

    Friday: Snow. High near 36. Chance of precipitation is 80%.

    High: 36 °F

    Snow

  • Friday Night

    Friday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 14.

    Low: 14 °F

    Chance Snow

  • Saturday

    Saturday: A chance of snow. Mostly cloudy, with a high near 20.

    High: 20 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 7.

    Low: 7 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 50 percent chance of snow after 3am. Cloudy, with a low around 23. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 25 mph.
Wednesday
A 50 percent chance of snow, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 20 by 5pm. Blustery, with a north northwest wind 20 to 25 mph, with gusts as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 13. Wind chill values as low as 1. Blustery, with a north northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 25. Wind chill values as low as 1. Northwest wind around 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Snow. Low around 21. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Friday
Snow. High near 36. Chance of precipitation is 80%.
Friday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 14.
Saturday
A chance of snow. Mostly cloudy, with a high near 20.
Saturday Night
Mostly cloudy, with a low around 7.
Sunday
A chance of snow after noon. Partly sunny, with a high near 17.
Sunday Night
Mostly cloudy, with a low around 6.
M.L.King Day
Partly sunny, with a high near 16.
Monday Night
Partly cloudy, with a low around 0.
Tuesday
Mostly sunny, with a high near 14.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Third Lake IL
 42.37°N 87.99°W
Last Update:
12:26 am CST Jan 14, 2026
Forecast Valid:
2am CST Jan 14, 2026-6pm CST Jan 20, 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