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Union, Illinois Weather Forecast
Union, Illinois Weather
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Weather Forecast for Union, Illinois : Will County
Issued: 4:01 am CST Jan 25, 2026 Latitude: 41.4969757 Longitude: -88.0233891 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday Thursday Friday Saturday
70% chance of snow on Today Cloudy on Tonight Sunny on Monday Partly Sunny on Tuesday 20% chance of snow on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday Mostly Sunny on Saturday
High: 16°F Low: -2°F High: 9 °F High: 17°F High: 14°F High: 14°F High: 18°F High: 22°F
Low: 3 °F Low: 0°F Low: -1°F Low: 3°F Low: 4°F  
Snow Cloudy Sunny Partly Sunny Snow Mostly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
JOLIET - (KJOT)
10°
Cloudy
Light Snow
as of 8:15 AM CST
Rel. Humidity: 84%
Dew Point: 7°F
Visibility: 2 Miles
Pressure: 30.16 in.
Flight Rule: IFR
Wind Data
5 MPH
350° North
Current Conditions at
ROMEOVILLE WFO - (KLOT)
9°
Feels like -4°F
Cloudy
Light Snow Mist
as of 8:29 AM CST
Rel. Humidity: 92%
Dew Point: 7°F
Visibility: 1 Miles
Pressure: 30.15 in.
Flight Rule: IFR
Wind Data
9 MPH
0° North
Cloud Level(s): Broken at 900ft, Solid Overcast at 1400ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
9°
Mostly Cloudy
Light Snow
as of 8:15 AM CST
Rel. Humidity: 78%
Dew Point: 3°F
Visibility: 1 1/4 Miles
Pressure: 30.16 in.
Flight Rule: IFR
Wind Data
3 MPH
010° North
Cloud Level(s): Broken at 2000ft
Current Conditions at
CHICAGO-MIDWAY - (KMDW)
12°
Cloudy
Light Snow Mist
as of 8:30 AM CST
Rel. Humidity: 85%
Dew Point: 9°F
Visibility: 3/4 Miles
Pressure: 30.14 in.
Flight Rule: MVFR
Wind Data
6 MPH
350° North
70% chance of snow Today Today... Snow likely, mainly before 3pm. Cloudy, with a high near 16. Wind chill values as low as -9. North northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Total daytime snow accumulation of around an inch possible.
Cloudy on Tonight Tonight... Partly cloudy, with a low around -2. Wind chill values as low as -18. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunny on Monday Monday... Sunny and cold, with a high near 9. Wind chill values as low as -20. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 3. Wind chill values as low as -13. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 17. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 0.
20% chance of snow Wednesday Wednesday... A 20 percent chance of snow after noon. Partly sunny, with a high near 14.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around -1.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 14.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 3.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 18.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 4.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 22.
Current Radar Image


Sun Almanac for Union, Illinois
Sunrise: 07:10 AM
Sunset: 4:59 PM
Civil Sunrise:06:40 AM
Civil Sunset: 5:29 PM
Nautical Sunrise: 06:06 AM
Nautical Sunset: 6:03 PM
Astro Sunrise: 05:34 AM
Astro Sunset: 6:35 PM
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