Union, Wisconsin Weather
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Weather Forecast for Union, Wisconsin : Grant County
Issued: 1:43 pm CDT Jul 4, 2025 Latitude: 42.8302694 Longitude: -90.5262388 View on Google Maps

MouseOver for Detail Forecast
Tonight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
Cloudy on Tonight 60% chance of thunderstorms on Saturday Partly Sunny 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: 71°F High: 87°F High: 83°F High: 83°F High: 85°F High: 84°F High: 84°F High: 83°F
Low: 67°F Low: 63°F Low: 65°F Low: 66°F Low: 64°F Low: 65°F  
Cloudy Thunderstorms Partly Sunny Mostly Sunny Thunderstorms Thunderstorms Thunderstorms Thunderstorms
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Current Conditions at
MINERAL POINT - (KMRJ)
86°
Feels like 91°F
Clear
as of 2:35 PM CDST
Rel. Humidity: 62%
Dew Point: 72°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
12 MPH
190° South
Cloud Level(s): Clear
Cloudy on Tonight Tonight... Partly cloudy, with a low around 71. South wind 6 to 10 mph.

60% chance of thunderstorms Saturday Saturday... Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a high near 87. Breezy, with a southwest wind 9 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

90% chance of thunderstorms Saturday Night Saturday Night... Showers and thunderstorms before 1am, then a slight chance of showers. Low around 67. Southwest wind 9 to 14 mph becoming northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 83. North wind around 10 mph.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 63. North wind 5 to 7 mph becoming light and variable after midnight.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 83. Light and variable wind becoming southeast around 5 mph in the afternoon.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 65. South wind around 5 mph becoming calm in the evening.

20% chance of thunderstorms Tuesday Tuesday... A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85. Southwest wind around 6 mph.

40% chance of thunderstorms Tuesday Night Tuesday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. West wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 40%.

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 84. Northeast wind 3 to 6 mph. Chance of precipitation is 30%.

30% chance of thunderstorms Wednesday Night Wednesday Night... A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Northeast wind around 6 mph becoming calm in the evening.

20% chance of thunderstorms Thursday Thursday... A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84. East wind 3 to 6 mph.

20% chance of rain Thursday Night Thursday Night... A 20 percent chance of showers. Partly cloudy, with a low around 65. Southeast wind 3 to 6 mph.

30% chance of thunderstorms Friday Friday... A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83. Southeast wind 5 to 8 mph becoming southwest in the afternoon.

Sun Almanac for Union, Wisconsin
Sunrise: 05:30 AM
Sunset: 8:44 PM
Civil Sunrise:04:55 AM
Civil Sunset: 9:19 PM
Nautical Sunrise: 04:10 AM
Nautical Sunset: 10:03 PM
Astro Sunrise: 03:15 AM
Astro Sunset: 10:58 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.