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.

Overcast

27°F

-3°C

Humidity 69%
Wind Speed NW 7 mph
Barometer 30.11 in (1021.0 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 21 Feb 3:51 pm CST
Extended Forecast for

Third Lake IL

  • This Afternoon

    This Afternoon: A chance of flurries before 4pm, then a slight chance of snow after 4pm. Cloudy, with a high near 30. West northwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.

    High: 30 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: A 40 percent chance of snow, mainly after 9pm. Cloudy, with a low around 21. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 21 °F

    Chance Snow

  • Sunday

    Sunday: A slight chance of snow before noon, then a chance of flurries after noon. Mostly cloudy, with a high near 28. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    High: 28 °F

    Blustery.
    Slight Chance
    Snow then
    Chance
    Flurries

  • Sunday Night

    Sunday Night: Cloudy, then gradually becoming partly cloudy, with a low around 16. Wind chill values as low as 1. North northwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 16 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 28. North northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 28 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 40.

    High: 40 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A chance of flurries before 4pm, then a slight chance of snow after 4pm. Cloudy, with a high near 30. West northwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Tonight
A 40 percent chance of snow, mainly after 9pm. Cloudy, with a low around 21. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
A slight chance of snow before noon, then a chance of flurries after noon. Mostly cloudy, with a high near 28. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Sunday Night
Cloudy, then gradually becoming partly cloudy, with a low around 16. Wind chill values as low as 1. North northwest wind around 15 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 28. North northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 17.
Tuesday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
Partly sunny, with a high near 40.
Wednesday Night
A chance of rain before midnight, then a chance of snow. Mostly cloudy, with a low around 22.
Thursday
A chance of snow. Mostly sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 25.
Friday
Sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Third Lake IL
 42.37°N 87.99°W
Last Update:
3:11 pm CST Feb 21, 2026
Forecast Valid:
3pm CST Feb 21, 2026-6pm CST Feb 27, 2026
 
Forecast Discussion
 
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Additional Resources

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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