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Union, Illinois Weather Forecast
Union, Illinois Weather
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Weather Forecast for Union, Illinois : Will County
Issued: 3:16 am CST Jan 1, 2026 Latitude: 41.4969757 Longitude: -88.0233891 View on Google Maps

MouseOver for Detail Forecast
New Year's Day Tonight Friday Saturday Sunday Monday Tuesday Wednesday
Partly Sunny on New Year's Day Cloudy on Tonight Mostly Sunny on Friday Partly Sunny on Saturday Mostly Sunny on Sunday Partly Sunny on Monday Mostly Cloudy on Tuesday Mostly Cloudy on Wednesday
High: 22°F Low: 14°F High: 27°F High: 30°F High: 30°F High: 42°F High: 46°F High: 43°F
  Low: 18°F Low: 16°F Low: 26°F Low: 31°F Low: 32°F  
Partly Sunny Cloudy Mostly Sunny Partly Sunny Mostly Sunny Partly Sunny Mostly Cloudy Mostly Cloudy
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Current Conditions at
JOLIET - (KJOT)
16°
Clear
as of 4:55 AM CST
Rel. Humidity: 72%
Dew Point: 9°F
Visibility: 10 Miles
Pressure: 30.06 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ROMEOVILLE WFO - (KLOT)
12°
Clear
as of 4:50 AM CST
Rel. Humidity: 72%
Dew Point: 5°F
Visibility: 10 Miles
Pressure: 30.04 in.
Flight Rule: VFR
Wind Data
8 MPH
340° North
Cloud Level(s): Clear
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
14°
Clear
as of 4:55 AM CST
Rel. Humidity: 78%
Dew Point: 9°F
Visibility: 10 Miles
Pressure: 30.04 in.
Flight Rule: VFR
Wind Data
5 MPH
010° North
Cloud Level(s): Clear
Current Conditions at
CHICAGO-MIDWAY - (KMDW)
12°
Clear
as of 4:53 AM CST
Rel. Humidity: 66%
Dew Point: 3°F
Visibility: 10 Miles
Pressure: 30.03 in.
Flight Rule: VFR
Wind Data
6 MPH
320° Northwest
Cloud Level(s): Clear
Partly Sunny on New Year's Day New Year's Day... Partly sunny, with a high near 22. Wind chill values as low as 1. North northwest wind around 5 mph becoming west in the afternoon. Winds could gust as high as 10 mph.
Cloudy on Tonight Tonight... Partly cloudy, with a low around 14. West northwest wind around 5 mph.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 27. Northwest wind around 5 mph.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 18. North wind around 5 mph becoming calm.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 30. North wind around 5 mph.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 16.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 30.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 26.
Partly Sunny on Monday Monday... Partly sunny, with a high near 42.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 31.
Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 46.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 32.
Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 43.
Current Radar Image


Sun Almanac for Union, Illinois
Sunrise: 07:19 AM
Sunset: 4:33 PM
Civil Sunrise:06:47 AM
Civil Sunset: 5:04 PM
Nautical Sunrise: 06:13 AM
Nautical Sunset: 5:39 PM
Astro Sunrise: 05:39 AM
Astro Sunset: 6:13 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.