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Arlington Heights, Illinois Weather Forecast
Arlington Heights, Illinois Weather
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Weather Forecast for Arlington Heights, Illinois : Cook County
Issued: 9:41 pm CST Jan 21, 2026 Latitude: 42.0883603 Longitude: -87.9806265 View on Google Maps

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Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
20% chance of snow on Tonight 20% chance of snow on Thursday Mostly Sunny on Friday 40% chance of snow on Saturday 20% chance of snow on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday Partly Sunny on Wednesday
Low: 14°F High: 21°F High: -2°F High: 9°F High: 17°F High: 11°F High: 20°F High: 19°F
Low: -10°F Low: -8°F Low: 5°F Low: 0°F Low: 2°F Low: 8°F  
Snow Snow Mostly Sunny Snow Snow Mostly Sunny Mostly Sunny Partly Sunny
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Current Conditions at
CHICAGO/WHEELING - (KPWK)
27°
Feels like 14°F
Cloudy
as of 10:52 PM CST
Rel. Humidity: 79%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 29.97 in.
Flight Rule: MVFR
Wind Data
16 MPH
Gust: 24 MPH
300° Northwest
Cloud Level(s): Scattered at 2100ft, Broken at 2800ft, Solid Overcast at 4600ft
Current Conditions at
CHICAGO-OHARE - (KORD)
28°
Feels like 15°F
Cloudy
as of 10:51 PM CST
Rel. Humidity: 68%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: MVFR
Wind Data
18 MPH
Gust: 31 MPH
290° West
Cloud Level(s): Broken at 2200ft, Solid Overcast at 4500ft
Current Conditions at
WEST CHICAGO - (KDPA)
27°
Feels like 13°F
Cloudy
as of 10:52 PM CST
Rel. Humidity: 68%
Dew Point: 18°F
Visibility: 7 Miles
Pressure: 29.97 in.
Flight Rule: VFR
Wind Data
18 MPH
Gust: 38 MPH
280° West
Cloud Level(s): Scattered at 2300ft, Scattered at 3000ft, Solid Overcast at 3800ft
Current Conditions at
WAUKEGAN - (KUGN)
25°
Cloudy
as of 10:51 PM CST
Rel. Humidity: 85%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 29.93 in.
Flight Rule: VFR
Wind Data
7 MPH
270° West
Cloud Level(s): Few at 1800ft, Scattered at 4300ft, Solid Overcast at 5500ft
20% chance of snow Tonight Tonight... A 20 percent chance of snow before 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 14. Wind chill values as low as 1. West wind 10 to 15 mph, with gusts as high as 35 mph.
20% chance of snow Thursday Thursday... A 20 percent chance of snow after 3pm. Increasing clouds, with a high near 21. Wind chill values as low as zero. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around -10. Wind chill values as low as -31. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Mostly Sunny on Friday Friday... Mostly sunny and cold, with a high near -2. Wind chill values as low as -32. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
20% chance of snow Friday Night Friday Night... A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around -8. North northwest wind 5 to 10 mph.
40% chance of snow Saturday Saturday... A 40 percent chance of snow, mainly after noon. Mostly cloudy and cold, with a high near 9.
50% chance of snow Saturday Night Saturday Night... A 50 percent chance of snow. Cloudy, with a low around 5.
20% chance of snow Sunday Sunday... A chance of snow. Mostly cloudy, with a high near 17.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 0.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 11.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 2.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 20.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 8.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 19.
Current Radar Image


Sun Almanac for Arlington Heights, Illinois
Sunrise: 07:13 AM
Sunset: 4:54 PM
Civil Sunrise:06:43 AM
Civil Sunset: 5:24 PM
Nautical Sunrise: 06:09 AM
Nautical Sunset: 5:58 PM
Astro Sunrise: 05:36 AM
Astro Sunset: 6:31 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.