url:
Union, Illinois Weather Forecast
Union, Illinois Weather
your sport, your way
Air Sports Net on FacebookAir Sports Net on Google +Air Sports Net on TwitterReceive RSS UpdatesReceive Email Updates

Click for Hazardous Weather Outlook for Union, Illinois
Change location by the zip code or city,state: or search for other weather forecast locations in Illinois by name.
Weather Forecast for Union, Illinois : Will County
Issued: 5:21 pm CST Jan 10, 2026 Latitude: 41.4969757 Longitude: -88.0233891 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Sunday Monday Tuesday Wednesday Thursday Friday Saturday
70% chance of snow on This Afternoon 80% chance of snow on Tonight Flurries on Sunday Mostly Sunny on Monday 20% chance of rain on Tuesday 20% chance of rain & snow on Wednesday Mostly Sunny on Thursday 20% chance of snow on Friday Mostly Cloudy on Saturday
High: 34°F Low: 22°F High: 32°F High: 42°F High: 49°F High: 35°F High: 31°F High: 35°F High: 27°F
Low: 26°F Low: 32°F Low: 30°F Low: 18°F Low: 26°F Low: 20°F  
Snow Snow Flurries Mostly Sunny Rain Rain & Snow Mostly Sunny Snow Mostly Cloudy
-
Current Conditions at
JOLIET - (KJOT)
36°
Feels like 27°F
Cloudy
as of 5:15 PM CST
Rel. Humidity: 69%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
12 MPH
Gust: 17 MPH
300° Northwest
Cloud Level(s): Scattered at 3100ft, Broken at 3900ft, Solid Overcast at 6000ft
Current Conditions at
ROMEOVILLE WFO - (KLOT)
36°
Feels like 28°F
Cloudy
as of 4:45 PM CST
Rel. Humidity: 69%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
10 MPH
240° Southwest
Cloud Level(s): Few at 4300ft, Broken at 6000ft, Solid Overcast at 7000ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
36°
Feels like 26°F
Mostly Cloudy
as of 5:15 PM CST
Rel. Humidity: 74%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
15 MPH
Gust: 18 MPH
280° West
Cloud Level(s): Scattered at 6000ft, Scattered at 7000ft, Broken at 8500ft
Current Conditions at
CHICAGO-MIDWAY - (KMDW)
36°
Mostly Cloudy
Light Snow
as of 5:13 PM CST
Rel. Humidity: 64%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: VFR
Wind Data
7 MPH
260° West
Cloud Level(s): Broken at 6000ft, Broken at 7000ft
70% chance of snow This Afternoon This Afternoon... Snow showers likely. Partly sunny, with a steady temperature around 34. West wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
80% chance of snow Tonight Tonight... Snow showers, mainly before 5am. Low around 22. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Flurries on Sunday Sunday... Scattered flurries before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 32. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 26. Southwest wind around 10 mph, with gusts as high as 20 mph.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 42. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 32.
20% chance of rain Tuesday Tuesday... A 20 percent chance of rain. Mostly cloudy, with a high near 49.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 30.
20% chance of rain & snow Wednesday Wednesday... A chance of rain and snow before noon, then a chance of snow. Mostly cloudy, with a high near 35.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 18.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 31.
20% chance of snow Thursday Night Thursday Night... A chance of snow. Mostly cloudy, with a low around 26.
20% chance of snow Friday Friday... A chance of snow. Mostly cloudy, with a high near 35.
20% chance of snow Friday Night Friday Night... A chance of snow. Mostly cloudy, with a low around 20.
Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 27.
Current Radar Image


Sun Almanac for Union, Illinois
Sunrise: 07:18 AM
Sunset: 4:42 PM
Civil Sunrise:06:47 AM
Civil Sunset: 5:12 PM
Nautical Sunrise: 06:13 AM
Nautical Sunset: 5:47 PM
Astro Sunrise: 05:39 AM
Astro Sunset: 6:20 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.