Union, Wisconsin Weather
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Weather Forecast for Union, Wisconsin : Rock County
Issued: 2:23 pm CDT Jul 4, 2025 Latitude: 42.8244484 Longitude: -89.301784 View on Google Maps

MouseOver for Detail Forecast
Tonight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
Mostly Clear on Tonight 40% chance of thunderstorms on Saturday 20% chance of thunderstorms on Sunday Mostly Sunny on Monday 20% chance of thunderstorms on Tuesday 30% chance of thunderstorms on Wednesday 20% chance of thunderstorms on Thursday 30% chance of thunderstorms on Friday
Low: 70°F High: 88°F High: 82°F High: 83°F High: 86°F High: 82°F High: 83°F High: 85°F
Low: 69°F Low: 61°F Low: 63°F Low: 66°F Low: 63°F Low: 62°F  
Mostly Clear Thunderstorms Thunderstorms Mostly Sunny Thunderstorms Thunderstorms Thunderstorms Thunderstorms
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Current Conditions at
MONROE - (KEFT)
86°
Feels like 91°F
Partly Cloudy
as of 2:35 PM CDST
Rel. Humidity: 62%
Dew Point: 72°F
Visibility: 10 Miles
Pressure: 30.06 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 17 MPH
200° South
Cloud Level(s): Scattered at 3700ft, Scattered at 4300ft
Current Conditions at
WATERTOWN - (KRYV)
86°
Feels like 93°F
Clear
as of 2:35 PM CDST
Rel. Humidity: 66%
Dew Point: 73°F
Visibility: 10 Miles
Pressure: 30.04 in.
Flight Rule: VFR
Wind Data
12 MPH
220° Southwest
Cloud Level(s): Clear
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 70. South wind 5 to 10 mph.
40% chance of thunderstorms Saturday Saturday... A 40 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 88. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
90% chance of thunderstorms Saturday Night Saturday Night... Showers and thunderstorms before 4am, then a slight chance of showers. Low around 69. Southwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
20% chance of thunderstorms Sunday Sunday... A slight chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 82. Northwest wind around 10 mph. Chance of precipitation is 20%.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 61. East wind 5 to 10 mph.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 83. Northeast wind around 5 mph.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 63. East wind around 5 mph becoming south after midnight.
20% chance of thunderstorms Tuesday Tuesday... A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. Southwest wind around 5 mph.
30% chance of thunderstorms Tuesday Night Tuesday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
30% chance of thunderstorms Wednesday Wednesday... A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.
20% chance of thunderstorms Wednesday Night Wednesday Night... A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
20% chance of thunderstorms Thursday Thursday... A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 62.
30% chance of thunderstorms Friday Friday... A 30 percent chance of showers and thunderstorms. Sunny, with a high near 85.
Current Radar Image


Sun Almanac for Union, Wisconsin
Sunrise: 05:25 AM
Sunset: 8:39 PM
Civil Sunrise:04:50 AM
Civil Sunset: 9:14 PM
Nautical Sunrise: 04:05 AM
Nautical Sunset: 9:59 PM
Astro Sunrise: 03:10 AM
Astro Sunset: 10:53 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.