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Knollwood, Illinois Weather Forecast
Knollwood, Illinois Weather
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Weather Forecast for Knollwood, Illinois : Lake County
Issued: 9:16 pm CST Dec 17, 2025 Latitude: 42.2861339 Longitude: -87.8856275 View on Google Maps

MouseOver for Detail Forecast
Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
30% chance of rain on Tonight 100% chance of freezing rain on Thursday Mostly Sunny on Friday 20% chance of rain & snow on Saturday Sunny on Sunday Mostly Cloudy on Monday Partly Sunny on Tuesday Partly Sunny on Wednesday
Low: 42 °F High: 47 °F High: 27°F High: 41°F High: 29°F High: 38°F High: 43°F High: 39°F
Low: 11°F Low: 21°F Low: 16°F Low: 20°F Low: 33°F Low: 29°F  
Rain Freezing Rain Mostly Sunny Rain & Snow Sunny Mostly Cloudy Partly Sunny Partly Sunny
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Current Conditions at
WAUKEGAN - (KUGN)
34°
Clear
as of 9:51 PM CST
Rel. Humidity: 86%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.81 in.
Flight Rule: VFR
Wind Data
8 MPH
180° South
Cloud Level(s): Clear
Current Conditions at
CHICAGO/WHEELING - (KPWK)
34°
Feels like 26°F
Clear
as of 9:52 PM CST
Rel. Humidity: 86%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
9 MPH
180° South
Cloud Level(s): Clear
Current Conditions at
CHICAGO-OHARE - (KORD)
36°
Cloudy
as of 9:51 PM CST
Rel. Humidity: 80%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.81 in.
Flight Rule: VFR
Wind Data
7 MPH
170° South
Cloud Level(s): Solid Overcast at 25000ft
30% chance of rain Tonight Tonight... A 30 percent chance of showers, mainly after 5am. Increasing clouds, with a temperature rising to around 42 by 5am. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

100% chance of freezing rain Thursday Thursday... Rain showers before 4pm, then a slight chance of freezing rain after 5pm. Temperature rising to near 47 by 10am, then falling to around 32 during the remainder of the day. Breezy, with a south wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 100%. Little or no ice accumulation expected.

40% chance of snow Thursday Night Thursday Night... Scattered snow showers, mainly before 9pm. Mostly cloudy, with a low around 11. Wind chill values as low as -7. Breezy, with a west wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 40%.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 27. Wind chill values as low as -7. Blustery, with a west northwest wind 10 to 20 mph, with gusts as high as 30 mph.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 21. South wind 10 to 15 mph, with gusts as high as 25 mph.

20% chance of rain & snow Saturday Saturday... A slight chance of rain and snow after noon. Mostly cloudy, with a high near 41. Chance of precipitation is 20%.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 16.

Sunny on Sunday Sunday... Sunny, with a high near 29.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 20.

Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 38.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 33.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 43.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 29.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 39.

Sun Almanac for Knollwood, Illinois
Sunrise: 07:15 AM
Sunset: 4:21 PM
Civil Sunrise:06:43 AM
Civil Sunset: 4:53 PM
Nautical Sunrise: 06:08 AM
Nautical Sunset: 5:28 PM
Astro Sunrise: 05:34 AM
Astro Sunset: 6:02 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.