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Union, Illinois Weather Forecast
Union, Illinois Weather
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Weather Forecast for Union, Illinois : Will County
Issued: 3:35 am CST Nov 27, 2025 Latitude: 41.4969757 Longitude: -88.0233891 View on Google Maps

MouseOver for Detail Forecast
Thanksgiving Day Tonight Friday Saturday Sunday Monday Tuesday Wednesday
Cloudy on Thanksgiving Day Partly Cloudy on Tonight Sunny on Friday 100% chance of snow on Saturday 40% chance of snow on Sunday Partly Sunny on Monday Partly Sunny on Tuesday Mostly Cloudy on Wednesday
High: 33°F Low: 22°F High: 32°F High: 31°F High: 30°F High: 19°F High: 21°F High: 30°F
  Low: 21°F Low: 26°F Low: 5°F Low: 6°F Low: 10°F  
Cloudy Partly Cloudy Sunny Snow Snow Partly Sunny Partly Sunny Mostly Cloudy
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Current Conditions at
JOLIET - (KJOT)
30°
Feels like 20°F
Cloudy
as of 4:15 AM CST
Rel. Humidity: 63%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.20 in.
Flight Rule: MVFR
Wind Data
12 MPH
Gust: 21 MPH
300° Northwest
Cloud Level(s): Solid Overcast at 2900ft
Current Conditions at
ROMEOVILLE WFO - (KLOT)
28°
Feels like 15°F
Cloudy
as of 4:15 AM CST
Rel. Humidity: 63%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.18 in.
Flight Rule: MVFR
Wind Data
18 MPH
Gust: 25 MPH
290° West
Cloud Level(s): Solid Overcast at 2900ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
28°
Feels like 15°F
Cloudy
as of 4:15 AM CST
Rel. Humidity: 74%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.19 in.
Flight Rule: MVFR
Wind Data
18 MPH
Gust: 24 MPH
300° Northwest
Cloud Level(s): Solid Overcast at 2700ft
Current Conditions at
CHICAGO-MIDWAY - (KMDW)
30°
Feels like 19°F
Cloudy
as of 3:53 AM CST
Rel. Humidity: 58%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 28 MPH
290° West
Cloud Level(s): Solid Overcast at 3200ft
Cloudy on Thanksgiving Day Thanksgiving Day... Cloudy, with a high near 33. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

Partly Cloudy on Tonight Tonight... Cloudy, then gradually becoming partly cloudy, with a low around 22. West northwest wind 10 to 15 mph.

Sunny on Friday Friday... Sunny, with a high near 32. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

50% chance of snow Friday Night Friday Night... A 50 percent chance of snow after midnight. Increasing clouds, with a low around 21. Calm wind becoming southeast around 5 mph after midnight.

100% chance of snow Saturday Saturday... Snow. The snow could be heavy at times. High near 31. Southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.

100% chance of snow Saturday Night Saturday Night... Snow. Low around 26. Chance of precipitation is 100%.

40% chance of snow Sunday Sunday... A 40 percent chance of snow, mainly before noon. Mostly cloudy, with a high near 30.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 5.

Partly Sunny on Monday Monday... Partly sunny, with a high near 19.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 6.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 21.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 10.

Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 30.

Current Radar Image


Sun Almanac for Union, Illinois
Sunrise: 06:55 AM
Sunset: 4:24 PM
Civil Sunrise:06:25 AM
Civil Sunset: 4:55 PM
Nautical Sunrise: 05:50 AM
Nautical Sunset: 5:29 PM
Astro Sunrise: 05:17 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.