Union, Illinois Weather
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Weather Forecast for Union, Illinois : Will County
Issued: 3:41 am CDT Jun 4, 2025 Latitude: 41.4969757 Longitude: -88.0233891 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
70% chance of rain on Overnight 70% chance of rain on Wednesday Mostly Sunny on Thursday 30% chance of  on Friday Partly Sunny on Saturday Rain on Sunday Sunny on Monday Mostly Sunny on Tuesday
Low: 68°F High: 61 °F High: 73°F High: 76°F High: 76°F High: 80°F High: 76°F High: 74°F
Low: 56°F Low: 57°F Low: 57°F Low: 56°F Low: 58°F Low: 54°F  
Rain Rain Mostly Sunny Partly Sunny Partly Sunny Rain Sunny Mostly Sunny
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Current Conditions at
JOLIET - (KJOT)
68°
Cloudy
Light Rain
as of 5:15 AM CDST
Rel. Humidity: 100%
Dew Point: 68°F
Visibility: 10 Miles
Pressure: 29.89 in.
Flight Rule: VFR
Wind Data
3 MPH
210° Southwest
Cloud Level(s): Scattered at 700ft, Broken at 4700ft, Solid Overcast at 9000ft
Current Conditions at
ROMEOVILLE WFO - (KLOT)
66°
Cloudy
Light Rain Mist
as of 5:15 AM CDST
Rel. Humidity: 100%
Dew Point: 66°F
Visibility: 6 Miles
Pressure: 29.90 in.
Flight Rule: IFR
Wind Data
7 MPH
200° South
Cloud Level(s): Broken at 600ft, Broken at 4700ft, Solid Overcast at 9000ft
Current Conditions at
MORRIS MUNICIPAL AIRPORT - (KC09)
66°
Cloudy
Rain
as of 5:15 AM CDST
Rel. Humidity: 100%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: VFR
Wind Data
5 MPH
220° Southwest
Cloud Level(s): Scattered at 700ft, Scattered at 3400ft, Solid Overcast at 4600ft
Current Conditions at
CHICAGO-MIDWAY - (KMDW)
70°
Cloudy
Light Rain Mist
as of 4:53 AM CDST
Rel. Humidity: 88%
Dew Point: 66°F
Visibility: 5 Miles
Pressure: 29.88 in.
Flight Rule: MVFR
Wind Data
9 MPH
220° Southwest
Cloud Level(s): Scattered at 1400ft, Broken at 7000ft, Solid Overcast at 9000ft
70% chance of rain Overnight Overnight... Rain likely. Cloudy, with a low around 68. Southwest wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

70% chance of rain Wednesday Wednesday... Rain likely, mainly before noon, then a chance of showers after 1pm. Cloudy, with a temperature falling to around 61 by 3pm. Southwest wind around 10 mph becoming northeast in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

30% chance of rain Wednesday Night Wednesday Night... A 30 percent chance of showers, mainly before 9pm. Mostly cloudy, with a low around 56. Northeast wind 5 to 10 mph.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 73. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 57. Northeast wind 5 to 10 mph.

30% chance of  Friday Friday... A 30 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 76.

20% chance of thunderstorms Friday Night Friday Night... A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 57.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 76.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 56.

Rain on Sunday Sunday... Showers likely after 1pm. Mostly sunny, with a high near 80.

20% chance of rain Sunday Night Sunday Night... A chance of showers. Partly cloudy, with a low around 58.

Sunny on Monday Monday... Sunny, with a high near 76.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 54.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 74.

Current Radar Image


Sun Almanac for Union, Illinois
Sunrise: 05:19 AM
Sunset: 8:22 PM
Civil Sunrise:04:46 AM
Civil Sunset: 8:55 PM
Nautical Sunrise: 04:03 AM
Nautical Sunset: 9:38 PM
Astro Sunrise: 03:13 AM
Astro Sunset: 10:28 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.