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

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: 2:26 pm CST Jan 20, 2026 Latitude: 41.4969757 Longitude: -88.0233891 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Wednesday Thursday Friday Saturday Sunday Monday
Partly Sunny on This Afternoon 100% chance of snow on Tonight 80% chance of snow on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday Mostly Cloudy on Saturday Partly Sunny on Sunday Mostly Sunny on Monday
High: 21°F Low: 24 °F High: 31°F High: 23°F High: 0°F High: 10°F High: 16°F High: 17°F
Low: 15°F Low: -6°F Low: -6°F Low: 3°F Low: 2°F  
Partly Sunny Snow Snow Mostly Sunny Mostly Sunny Mostly Cloudy Partly Sunny Mostly Sunny
-
Current Conditions at
JOLIET - (KJOT)
25°
Feels like 14°F
Clear
as of 2:35 PM CST
Rel. Humidity: 41%
Dew Point: 5°F
Visibility: 10 Miles
Pressure: 30.30 in.
Flight Rule: VFR
Wind Data
10 MPH
180° South
Cloud Level(s): Clear
Current Conditions at
ROMEOVILLE WFO - (KLOT)
19°
Feels like 7°F
Clear
as of 1:50 PM CST
Rel. Humidity: 44%
Dew Point: 1°F
Visibility: 10 Miles
Pressure: 30.33 in.
Flight Rule: VFR
Wind Data
12 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
25°
Clear
as of 2:35 PM CST
Rel. Humidity: 38%
Dew Point: 3°F
Visibility: 10 Miles
Pressure: 30.28 in.
Flight Rule: VFR
Wind Data
7 MPH
190° South
Cloud Level(s): Clear
Current Conditions at
CHICAGO-MIDWAY - (KMDW)
19°
Feels like 6°F
Mostly Cloudy
as of 1:53 PM CST
Rel. Humidity: 41%
Dew Point: -0°F
Visibility: 10 Miles
Pressure: 30.32 in.
Flight Rule: VFR
Wind Data
14 MPH
220° Southwest
Cloud Level(s): Few at 2500ft, Broken at 25000ft
Partly Sunny on This Afternoon This Afternoon... Partly sunny, with a high near 21. South southwest wind around 10 mph, with gusts as high as 15 mph.

100% chance of snow Tonight Tonight... Snow, mainly after 2am. Temperature rising to around 24 by 3am. South wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

80% chance of snow Wednesday Wednesday... Snow, mainly before 7am. High near 31. West wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

60% chance of snow Wednesday Night Wednesday Night... Snow showers likely, mainly before 8pm. Mostly cloudy, with a low around 15. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 23. West wind 10 to 15 mph, with gusts as high as 25 mph.

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

Mostly Sunny on Friday Friday... Mostly sunny and cold, with a high near 0.

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

Mostly Cloudy on Saturday Saturday... Mostly cloudy and cold, with a high near 10.

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 3.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 16.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 2.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 17.

Current Radar Image


Sun Almanac for Union, Illinois
Sunrise: 07:13 AM
Sunset: 4:53 PM
Civil Sunrise:06:43 AM
Civil Sunset: 5:23 PM
Nautical Sunrise: 06:09 AM
Nautical Sunset: 5:57 PM
Astro Sunrise: 05:36 AM
Astro Sunset: 6:30 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.