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Union, Illinois Weather Forecast
Union, Illinois Weather
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Weather Forecast for Union, Illinois : Will County
Issued: 9:16 pm CST Dec 14, 2025 Latitude: 41.4969757 Longitude: -88.0233891 View on Google Maps

MouseOver for Detail Forecast
Tonight Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Cloudy on Tonight Partly Sunny on Monday Mostly Sunny on Tuesday Mostly Sunny on Wednesday Rain on Thursday Mostly Sunny on Friday Mostly Cloudy on Saturday Mostly Sunny on Sunday
Low: 0 °F High: 24°F High: 37°F High: 39°F High: 48°F High: 27°F High: 44°F High: 35°F
Low: 16°F Low: 30°F Low: 33°F Low: 11°F Low: 22°F Low: 26°F  
Cloudy Partly Sunny Mostly Sunny Mostly Sunny Rain Mostly Sunny Mostly Cloudy Mostly Sunny
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Current Conditions at
JOLIET - (KJOT)
3°
Partly Cloudy
as of 10:35 PM CST
Rel. Humidity: 71%
Dew Point: -4°F
Visibility: 10 Miles
Pressure: 30.59 in.
Flight Rule: VFR
Wind Data
3 MPH
200° South
Cloud Level(s): Scattered at 1000ft
Current Conditions at
ROMEOVILLE WFO - (KLOT)
1°
Clear
as of 10:35 PM CST
Rel. Humidity: 70%
Dew Point: -6°F
Visibility: 10 Miles
Pressure: 30.58 in.
Flight Rule: VFR
Wind Data
8 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
-0°
Clear
as of 10:35 PM CST
Rel. Humidity: 77%
Dew Point: -6°F
Visibility: 10 Miles
Pressure: 30.57 in.
Flight Rule: VFR
Wind Data
3 MPH
190° South
Cloud Level(s): Clear
Current Conditions at
CHICAGO-MIDWAY - (KMDW)
5°
Feels like -10°F
Mostly Cloudy
as of 9:53 PM CST
Rel. Humidity: 60%
Dew Point: -6°F
Visibility: 10 Miles
Pressure: 30.56 in.
Flight Rule: VFR
Wind Data
12 MPH
230° Southwest
Cloud Level(s): Broken at 16000ft
Cloudy on Tonight Tonight... Partly cloudy, with a low around 0. Wind chill values as low as -15. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Partly Sunny on Monday Monday... Partly sunny, with a high near 24. Wind chill values as low as -14. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 16. Southwest wind 5 to 10 mph becoming light south southwest.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 37. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 30. West southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 39.
40% chance of rain Wednesday Night Wednesday Night... A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 33. Breezy.
Rain on Thursday Thursday... Showers likely, mainly before noon. Mostly cloudy, with a high near 48. Breezy.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 11.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 27.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 22.
Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 44.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 26.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 35.
Current Radar Image


Sun Almanac for Union, Illinois
Sunrise: 07:12 AM
Sunset: 4:23 PM
Civil Sunrise:06:40 AM
Civil Sunset: 4:54 PM
Nautical Sunrise: 06:06 AM
Nautical Sunset: 5:29 PM
Astro Sunrise: 05:32 AM
Astro Sunset: 6:03 PM
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