Union, Illinois Weather
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Weather Forecast for Union, Illinois : McHenry County
Issued: 3:41 am CDT Jun 4, 2025 Latitude: 42.2330782 Longitude: -88.5423132 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
100% chance of rain on Overnight 90% chance of rain on Wednesday Mostly Sunny on Thursday 20% chance of rain on Friday Mostly Sunny on Saturday Rain on Sunday Sunny on Monday Mostly Sunny on Tuesday
Low: 63°F High: 66°F High: 75°F High: 75°F High: 75°F High: 78°F High: 73°F High: 73°F
Low: 52°F Low: 55°F Low: 55°F Low: 54°F Low: 55°F Low: 51°F  
Rain Rain Mostly Sunny Rain Mostly Sunny Rain Sunny Mostly Sunny
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Current Conditions at
DE KALB TAYLOR MUNICIPAL - (KDKB)
64°
Cloudy
Light Rain
as of 5:15 AM CDST
Rel. Humidity: 100%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.90 in.
Flight Rule: MVFR
Wind Data
6 MPH
230° Southwest
Cloud Level(s): Scattered at 600ft, Broken at 1600ft, Solid Overcast at 11000ft
Current Conditions at
WEST CHICAGO - (KDPA)
66°
Cloudy
Rain Mist
as of 4:52 AM CDST
Rel. Humidity: 93%
Dew Point: 64°F
Visibility: 5 Miles
Pressure: 29.87 in.
Flight Rule: IFR
Wind Data
7 MPH
210° Southwest
Cloud Level(s): Broken at 900ft, Solid Overcast at 1300ft
Current Conditions at
ROCKFORD - (KRFD)
61°
Cloudy
Light Rain Mist
as of 5:22 AM CDST
Rel. Humidity: 87%
Dew Point: 57°F
Visibility: 3 Miles
Pressure: 29.92 in.
Flight Rule: MVFR
Wind Data
13 MPH
350° North
Cloud Level(s): Scattered at 700ft, Broken at 1300ft, Solid Overcast at 2700ft
Current Conditions at
CHICAGO/WHEELING - (KPWK)
68°
Cloudy
Light Rain
as of 4:52 AM CDST
Rel. Humidity: 93%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 29.89 in.
Flight Rule: MVFR
Wind Data
5 MPH
210° Southwest
Cloud Level(s): Broken at 1900ft, Solid Overcast at 3300ft
100% chance of rain Overnight Overnight... Rain. Steady temperature around 63. North northwest wind around 10 mph. Chance of precipitation is 100%. New precipitation amounts of less than a tenth of an inch possible.

90% chance of rain Wednesday Wednesday... Rain, mainly before 10am. Patchy smoke after 3pm. High near 66. Northeast wind around 10 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Smoke on Wednesday Night Wednesday Night... Patchy smoke. Partly cloudy, with a low around 52. East northeast wind around 5 mph.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 75. East northeast wind 5 to 10 mph, with gusts as high as 20 mph.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 55. East northeast wind around 5 mph.

20% chance of rain Friday Friday... A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 75.

20% chance of thunderstorms Friday Night Friday Night... A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 75.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 54.

Rain on Sunday Sunday... Showers likely, mainly after 1pm. Mostly sunny, with a high near 78.

20% chance of rain Sunday Night Sunday Night... A chance of showers. Partly cloudy, with a low around 55.

Sunny on Monday Monday... Sunny, with a high near 73.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 51.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 73.

Current Radar Image


Sun Almanac for Union, Illinois
Sunrise: 05:19 AM
Sunset: 8:26 PM
Civil Sunrise:04:45 AM
Civil Sunset: 9:00 PM
Nautical Sunrise: 04:01 AM
Nautical Sunset: 9:44 PM
Astro Sunrise: 03:09 AM
Astro Sunset: 10:36 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.