Union, Illinois Weather
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Weather Forecast for Union, Illinois : Will County
Issued: 2:06 am CDT Jul 7, 2025 Latitude: 41.4969757 Longitude: -88.0233891 View on Google Maps

MouseOver for Detail Forecast
Overnight Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Cloudy on Overnight Mostly Cloudy on Monday 20% chance of thunderstorms on Tuesday 30% chance of thunderstorms on Wednesday Mostly Sunny on Thursday 20% chance of thunderstorms on Friday 20% chance of thunderstorms on Saturday Mostly Sunny on Sunday
Low: 64°F High: 83°F High: 87°F High: 86°F High: 88°F High: 90°F High: 85°F High: 86°F
Low: 62°F Low: 68°F Low: 66°F Low: 67°F Low: 69°F Low: 65°F  
Cloudy Mostly Cloudy Thunderstorms Thunderstorms Mostly Sunny Thunderstorms Thunderstorms Mostly Sunny
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Current Conditions at
JOLIET - (KJOT)
70°
Cloudy
as of 2:15 AM CDST
Rel. Humidity: 83%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: MVFR
Wind Data
9 MPH
040° Northeast
Cloud Level(s): Solid Overcast at 1300ft
Current Conditions at
ROMEOVILLE WFO - (KLOT)
66°
Cloudy
as of 2:15 AM CDST
Rel. Humidity: 93%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.96 in.
Flight Rule: MVFR
Wind Data
9 MPH
Gust: 15 MPH
020° North
Cloud Level(s): Solid Overcast at 1100ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
66°
Cloudy
as of 2:15 AM CDST
Rel. Humidity: 93%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 1300ft
Current Conditions at
CHICAGO-MIDWAY - (KMDW)
68°
Cloudy
as of 1:53 AM CDST
Rel. Humidity: 82%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 29.93 in.
Flight Rule: MVFR
Wind Data
14 MPH
020° North
Cloud Level(s): Solid Overcast at 1000ft
Cloudy on Overnight Overnight... Cloudy, with a low around 64. North wind around 5 mph.

Mostly Cloudy on Monday Monday... Mostly cloudy, then gradually becoming sunny, with a high near 83. North wind around 10 mph.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 62. Northeast wind around 5 mph becoming calm in the evening.

20% chance of thunderstorms Tuesday Tuesday... A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. Calm wind becoming south southwest around 5 mph in the morning. Winds could gust as high as 10 mph.

30% chance of thunderstorms Tuesday Night Tuesday Night... A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South southwest wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.

30% chance of thunderstorms Wednesday Wednesday... A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 86.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 66.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 88.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 67.

20% chance of thunderstorms Friday Friday... A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90.

20% chance of thunderstorms Friday Night Friday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 69.

20% chance of thunderstorms Saturday Saturday... A chance of showers and thunderstorms. Partly sunny, with a high near 85.

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 65.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 86.

Current Radar Image


Sun Almanac for Union, Illinois
Sunrise: 05:26 AM
Sunset: 8:28 PM
Civil Sunrise:04:53 AM
Civil Sunset: 9:02 PM
Nautical Sunrise: 04:10 AM
Nautical Sunset: 9:44 PM
Astro Sunrise: 03:20 AM
Astro Sunset: 10:35 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.