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Union, Illinois Weather Forecast
Union, Illinois Weather
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Weather Forecast for Union, Illinois : Will County
Issued: 3:11 pm CST Nov 8, 2025 Latitude: 41.4969757 Longitude: -88.0233891 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Sunday Monday Veterans Day Wednesday Thursday Friday
80% chance of rain on This Afternoon 100% chance of rain & snow on Tonight 30% chance of snow on Sunday 30% chance of snow on Monday Mostly Cloudy on Veterans Day Mostly Sunny on Wednesday Sunny on Thursday Mostly Sunny on Friday
High: 45°F Low: 32°F High: 35°F High: 36°F High: 42°F High: 50°F High: 52°F High: 58°F
Low: 24°F Low: 23°F Low: 36°F Low: 31°F Low: 35°F  
Rain Rain & Snow Snow Snow Mostly Cloudy Mostly Sunny Sunny Mostly Sunny
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Current Conditions at
JOLIET - (KJOT)
48°
Cloudy
Light Rain
as of 3:15 PM CST
Rel. Humidity: 76%
Dew Point: 41°F
Visibility: 10 Miles
Pressure: 29.85 in.
Flight Rule: MVFR
Wind Data
8 MPH
070° East
Cloud Level(s): Solid Overcast at 2700ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
46°
Cloudy
Light Rain
as of 3:15 PM CST
Rel. Humidity: 87%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.83 in.
Flight Rule: VFR
Wind Data
6 MPH
090° East
Current Conditions at
CHICAGO-MIDWAY - (KMDW)
46°
Feels like 40°F
Cloudy
as of 2:53 PM CST
Rel. Humidity: 61%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.86 in.
Flight Rule: MVFR
Wind Data
13 MPH
070° East
Cloud Level(s): Solid Overcast at 3000ft
80% chance of rain This Afternoon This Afternoon... Rain, mainly after 4pm. Steady temperature around 45. East wind around 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

100% chance of rain & snow Tonight Tonight... Rain before 4am, then rain and snow between 4am and 5am, then a chance of snow after 5am. Low around 32. East wind 10 to 15 mph becoming north after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

30% chance of snow Sunday Sunday... A 30 percent chance of snow showers before 9am. Partly sunny, with a high near 35. Breezy, with a north northwest wind 15 to 20 mph, with gusts as high as 30 mph.

60% chance of snow Sunday Night Sunday Night... Snow showers likely, mainly after midnight. Mostly cloudy, with a low around 24. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

30% chance of snow Monday Monday... A 30 percent chance of snow showers before noon. Mostly sunny, with a high near 36. Breezy, with a north northwest wind 10 to 20 mph, with gusts as high as 25 mph.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 23.

Mostly Cloudy on Veterans Day Veterans Day... Mostly cloudy, with a high near 42.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 36.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 50.

Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 31.

Sunny on Thursday Thursday... Sunny, with a high near 52.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 35.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 58.

Current Radar Image


Sun Almanac for Union, Illinois
Sunrise: 06:33 AM
Sunset: 4:39 PM
Civil Sunrise:06:04 AM
Civil Sunset: 5:08 PM
Nautical Sunrise: 05:31 AM
Nautical Sunset: 5:41 PM
Astro Sunrise: 04:58 AM
Astro Sunset: 6:14 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.