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Knollwood, Illinois Weather Forecast
Knollwood, Illinois Weather
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Weather Forecast for Knollwood, Illinois : Lake County
Issued: 5:55 am CST Jan 20, 2026 Latitude: 42.2861339 Longitude: -87.8856275 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday Monday
Increasing Clouds on Today 100% chance of snow on Tonight 30% chance of snow on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday Mostly Cloudy on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday
High: 20°F Low: 21 °F High: 27°F High: 19°F High: 0°F High: 7°F High: 16°F High: 16°F
Low: 11°F Low: -8°F Low: -8°F Low: -1°F Low: 1°F  
Increasing Clouds Snow Snow Mostly Sunny Mostly Sunny Mostly Cloudy Mostly Sunny Mostly Sunny
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Current Conditions at
WAUKEGAN - (KUGN)
-0°
Clear
as of 5:51 AM CST
Rel. Humidity: 70%
Dew Point: -8°F
Visibility: 10 Miles
Pressure: 30.31 in.
Flight Rule: VFR
Wind Data
7 MPH
250° West
Cloud Level(s): Clear
Current Conditions at
CHICAGO/WHEELING - (KPWK)
Clear
as of 5:52 AM CST
Rel. Humidity: 71%
Dew Point: -4°F
Visibility: 10 Miles
Pressure: 30.35 in.
Flight Rule: VFR
Wind Data
6 MPH
260° West
Cloud Level(s): Clear
Current Conditions at
CHICAGO-OHARE - (KORD)
Clear
as of 5:51 AM CST
Rel. Humidity: 65%
Dew Point: -6°F
Visibility: 10 Miles
Pressure: 30.33 in.
Flight Rule: VFR
Wind Data
6 MPH
250° West
Cloud Level(s): Clear
Increasing Clouds on Today Today... Increasing clouds, with a high near 20. Wind chill values as low as -12. West southwest wind 5 to 10 mph, with gusts as high as 15 mph.

100% chance of snow Tonight Tonight... Snow, mainly after midnight. Temperature rising to around 21 by 4am. South wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

30% chance of snow Wednesday Wednesday... A 30 percent chance of snow, mainly before 9am. Partly sunny, with a high near 27. West wind 10 to 15 mph, with gusts as high as 25 mph.

60% chance of blowing snow Wednesday Night Wednesday Night... Snow showers likely before midnight. Patchy blowing snow between 9pm and 3am. Mostly cloudy, with a low around 11. Wind chill values as low as -1. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 19. West wind 10 to 15 mph, with gusts as high as 25 mph.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around -8.

Mostly Sunny on Friday Friday... Mostly sunny and cold, with a high near 0.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around -8.

Mostly Cloudy on Saturday Saturday... Mostly cloudy and cold, with a high near 7.

20% chance of snow Saturday Night Saturday Night... A chance of snow before midnight. Mostly cloudy, with a low around -1.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 16.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 1.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 16.

Sun Almanac for Knollwood, Illinois
Sunrise: 07:15 AM
Sunset: 4:50 PM
Civil Sunrise:06:44 AM
Civil Sunset: 5:21 PM
Nautical Sunrise: 06:10 AM
Nautical Sunset: 5:55 PM
Astro Sunrise: 05:37 AM
Astro Sunset: 6:29 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.