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Union, Illinois Weather Forecast
Union, Illinois Weather
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Weather Forecast for Union, Illinois : Will County
Issued: 7:31 pm CST Nov 25, 2025 Latitude: 41.4969757 Longitude: -88.0233891 View on Google Maps

MouseOver for Detail Forecast
Tonight Wednesday Thanksgiving Day Friday Saturday Sunday Monday Tuesday
70% chance of rain on Tonight 40% chance of snow on Wednesday Mostly Sunny on Thanksgiving Day Sunny on Friday Snow on Saturday 20% chance of snow on Sunday Partly Sunny on Monday Partly Sunny on Tuesday
Low: 33°F High: 35°F High: 33°F High: 32°F High: 32°F High: 29°F High: 21°F High: 22°F
Low: 24°F Low: 20°F Low: 22°F Low: 29°F Low: 8°F Low: 9°F  
Rain Snow Mostly Sunny Sunny Snow Snow Partly Sunny Partly Sunny
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Current Conditions at
JOLIET - (KJOT)
52°
Cloudy
as of 7:15 PM CST
Rel. Humidity: 93%
Dew Point: 50°F
Visibility: 10 Miles
Pressure: 29.77 in.
Flight Rule: MVFR
Wind Data
7 MPH
220° Southwest
Cloud Level(s): Solid Overcast at 1800ft
Current Conditions at
ROMEOVILLE WFO - (KLOT)
50°
Cloudy
as of 6:45 PM CST
Rel. Humidity: 100%
Dew Point: 50°F
Visibility: 10 Miles
Pressure: 29.77 in.
Flight Rule: MVFR
Wind Data
6 MPH
220° Southwest
Cloud Level(s): Solid Overcast at 1900ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
50°
Cloudy
as of 7:15 PM CST
Rel. Humidity: 93%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 29.76 in.
Flight Rule: MVFR
Wind Data
7 MPH
210° Southwest
Cloud Level(s): Solid Overcast at 1700ft
Current Conditions at
CHICAGO-MIDWAY - (KMDW)
50°
Feels like 45°F
Cloudy
as of 6:53 PM CST
Rel. Humidity: 87%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.76 in.
Flight Rule: MVFR
Wind Data
10 MPH
250° West
Cloud Level(s): Solid Overcast at 1000ft
70% chance of rain Tonight Tonight... Rain likely between 9pm and midnight. Mostly cloudy, with a low around 33. Breezy, with a west southwest wind 10 to 15 mph increasing to 20 to 25 mph after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

40% chance of snow Wednesday Wednesday... A 40 percent chance of snow. Cloudy, with a high near 35. Windy, with a west wind 25 to 30 mph, with gusts as high as 45 mph.

Partly Cloudy on Wednesday Night Wednesday Night... Cloudy, then gradually becoming partly cloudy, with a low around 24. Blustery, with a west northwest wind around 20 mph, with gusts as high as 40 mph.

Mostly Sunny on Thanksgiving Day Thanksgiving Day... Mostly sunny, with a high near 33. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 20. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

Sunny on Friday Friday... Sunny, with a high near 32.

50% chance of snow Friday Night Friday Night... A 50 percent chance of snow after midnight. Mostly cloudy, with a low around 22.

Snow on Saturday Saturday... Snow. Cloudy, with a high near 32.

Snow on Saturday Night Saturday Night... Snow, mainly before midnight. Cloudy, with a low around 29.

20% chance of snow Sunday Sunday... A chance of snow. Mostly cloudy, with a high near 29.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 8.

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

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 9.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 22.

Current Radar Image


Sun Almanac for Union, Illinois
Sunrise: 06:53 AM
Sunset: 4:25 PM
Civil Sunrise:06:23 AM
Civil Sunset: 4:56 PM
Nautical Sunrise: 05:49 AM
Nautical Sunset: 5:30 PM
Astro Sunrise: 05:15 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.