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Fairfield, Illinois Weather Forecast
Fairfield, Illinois Weather
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Click for Special Weather Statement for Fairfield, Illinois
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Weather Forecast for Fairfield, Illinois : Lake County
Issued: 2:21 pm CST Dec 17, 2025 Latitude: 42.2191908 Longitude: -88.0614661 View on Google Maps

MouseOver for Detail Forecast
Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Increasing Clouds on Tonight 100% chance of rain & snow on Thursday Mostly Sunny on Friday 20% chance of snow on Saturday Sunny on Sunday Mostly Cloudy on Monday Partly Sunny on Tuesday Partly Sunny on Wednesday
Low: 42 °F High: 46 °F High: 25°F High: 41°F High: 28°F High: 38°F High: 44°F High: 39°F
Low: 10°F Low: 20°F Low: 15°F Low: 18°F Low: 32°F Low: 27°F  
Increasing Clouds Rain & Snow Mostly Sunny Snow Sunny Mostly Cloudy Partly Sunny Partly Sunny
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Current Conditions at
CHICAGO/WHEELING - (KPWK)
36°
Feels like 28°F
Clear
as of 4:52 PM CST
Rel. Humidity: 80%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
9 MPH
160° South
Cloud Level(s): Clear
Current Conditions at
WAUKEGAN - (KUGN)
36°
Feels like 27°F
Clear
as of 4:51 PM CST
Rel. Humidity: 80%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
12 MPH
150° Southeast
Cloud Level(s): Clear
Current Conditions at
CHICAGO-OHARE - (KORD)
39°
Mostly Clear
as of 4:51 PM CST
Rel. Humidity: 69%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.93 in.
Flight Rule: VFR
Wind Data
7 MPH
160° South
Cloud Level(s): Few at 25000ft
Current Conditions at
WEST CHICAGO - (KDPA)
36°
Feels like 28°F
Clear
as of 4:52 PM CST
Rel. Humidity: 80%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
9 MPH
160° South
Cloud Level(s): Clear
Increasing Clouds on Tonight Tonight... Drizzle likely, mainly after 5am. Increasing clouds, with a temperature rising to around 42 by 5am. South wind 5 to 15 mph, with gusts as high as 30 mph.
100% chance of rain & snow Thursday Thursday... Rain and snow before 4pm, then a slight chance of snow after 5pm. Temperature rising to near 46 by 8am, then falling to around 31 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 snow accumulation expected.
40% chance of snow Thursday Night Thursday Night... Scattered snow showers, mainly before 9pm. Mostly cloudy, with a low around 10. Wind chill values as low as -8. 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 25. Wind chill values as low as -8. Blustery, with a west northwest wind 10 to 20 mph becoming southwest in the afternoon. Winds could gust as high as 30 mph.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 20. South wind 10 to 15 mph, with gusts as high as 25 mph.
20% chance of snow Saturday Saturday... A 20 percent chance of snow after noon. Mostly cloudy, with a high near 41.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 15.
Sunny on Sunday Sunday... Sunny, with a high near 28.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 18.
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 32.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 44.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 27.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 39.
Current Radar Image


Sun Almanac for Fairfield, Illinois
Sunrise: 07:16 AM
Sunset: 4:22 PM
Civil Sunrise:06:44 AM
Civil Sunset: 4:53 PM
Nautical Sunrise: 06:08 AM
Nautical Sunset: 5:29 PM
Astro Sunrise: 05:34 AM
Astro Sunset: 6:03 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.