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

33°F

1°C

Humidity 85%
Wind Speed E 12 mph
Barometer 30.05 in (1018.9 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 14 Mar 7:51 pm CDT
Extended Forecast for

Third Lake IL

  • Tonight

    Tonight: A slight chance of snow showers before midnight, then a chance of rain showers. Cloudy, with a temperature rising to around 37 by 3am. East southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    Low: 33 °F⇑

    Slight Chance
    Snow Showers
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers, then showers and possibly a thunderstorm after 10am. High near 57. Breezy, with a south wind 15 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 57 °F

    Breezy.
    Showers
    Likely then
    Showers

  • Sunday Night

    Sunday Night: Rain showers and sleet before 11pm, then rain showers and snow, possibly mixed with sleet between 11pm and midnight, then snow after midnight. The sleet could be heavy at times. Patchy blowing snow after 1am. Low around 21. Windy, with a west wind 20 to 30 mph becoming north in the evening. Winds could gust as high as 45 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 2 inches possible.

    Low: 21 °F

    Wintry Mix
    and Breezy
    then Snow and
    Patchy
    Blowing Snow

  • Monday

    Monday: Snow, mainly before 1pm. Areas of blowing snow. High near 24. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 24 °F

    Snow and
    Areas Blowing
    Snow

  • Monday Night

    Monday Night: A 10 percent chance of snow before 7pm. Mostly cloudy, with a low around 9. Blustery, with a west northwest wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.

    Low: 9 °F

    Slight Chance
    Snow and
    Blustery then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 19. Chance of precipitation is 70%.

    Low: 19 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Wednesday

    Wednesday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of snow showers before midnight, then a chance of rain showers. Cloudy, with a temperature rising to around 37 by 3am. East southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Sunday
A chance of showers, then showers and possibly a thunderstorm after 10am. High near 57. Breezy, with a south wind 15 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Rain showers and sleet before 11pm, then rain showers and snow, possibly mixed with sleet between 11pm and midnight, then snow after midnight. The sleet could be heavy at times. Patchy blowing snow after 1am. Low around 21. Windy, with a west wind 20 to 30 mph becoming north in the evening. Winds could gust as high as 45 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 1 to 2 inches possible.
Monday
Snow, mainly before 1pm. Areas of blowing snow. High near 24. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Monday Night
A 10 percent chance of snow before 7pm. Mostly cloudy, with a low around 9. Blustery, with a west northwest wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
Tuesday
Mostly sunny, with a high near 24.
Tuesday Night
Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 19. Chance of precipitation is 70%.
Wednesday
Partly sunny, with a high near 42.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 53.
Thursday Night
Mostly cloudy, with a low around 35.
Friday
Mostly sunny, with a high near 55.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Partly sunny, with a high near 57.
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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:
8:11 pm CDT Mar 14, 2026
Forecast Valid:
8pm CDT Mar 14, 2026-6pm CDT Mar 21, 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