Union, Wisconsin Weather
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Weather Forecast for Union, Wisconsin : Grant County
Issued: 5:58 am CDT Aug 26, 2025 Latitude: 42.8302694 Longitude: -90.5262388 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday Labor Day
Mostly Sunny on Today 20% chance of on Tonight Mostly Sunny on Wednesday Mostly Sunny on Thursday Sunny on Friday Partly Sunny on Saturday Mostly Sunny on Sunday Mostly Sunny on Labor Day
High: 70°F Low: 50°F High: 72°F High: 73°F High: 69°F High: 71°F High: 73°F High: 75°F
Low: 56°F Low: 48°F Low: 48°F Low: 52°F Low: 53°F  
Mostly Sunny Mostly Clear Mostly Sunny Mostly Sunny Sunny Partly Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
MINERAL POINT - (KMRJ)
46°
Clear
as of 5:35 AM CDST
Rel. Humidity: 93%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 30.22 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
BOSCOBEL - (KOVS)
48°
Partly Cloudy
as of 5:38 AM CDST
Rel. Humidity: 100%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 30.21 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Scattered at 300ft
Current Conditions at
LONE ROCK - (KLNR)
46°
Clear
Mist
as of 5:43 AM CDST
Rel. Humidity: 100%
Dew Point: 46°F
Visibility: 1 Miles
Pressure: 30.20 in.
Flight Rule: IFR
Wind Data
Calm
Current Conditions at
DUBUQUE - (KDBQ)
46°
Clear
as of 4:53 AM CDST
Rel. Humidity: 93%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 30.21 in.
Flight Rule: VFR
Wind Data
5 MPH
210° Southwest
Cloud Level(s): Clear
Mostly Sunny on Today Today... Mostly sunny, with a high near 70. Calm wind becoming northwest 5 to 8 mph in the morning.
20% chance of Tonight Tonight... A chance of sprinkles before 9pm. Mostly clear, with a low around 50. Light southwest wind.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 72. Light southwest wind increasing to 5 to 10 mph in the morning.
30% chance of thunderstorms Wednesday Night Wednesday Night... A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 56. Southwest wind around 6 mph.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 73. Light and variable wind becoming northeast 5 to 8 mph in the morning.
Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 48. East wind around 6 mph.
Sunny on Friday Friday... Sunny, with a high near 69. East wind 3 to 6 mph.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 48. Calm wind.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 71. Calm wind becoming southeast around 5 mph in the afternoon.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 52. Calm wind.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 73. Calm wind becoming east around 5 mph in the afternoon.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 53. Calm wind.
Mostly Sunny on Labor Day Labor Day... Mostly sunny, with a high near 75. Calm wind becoming southeast around 5 mph in the afternoon.
Current Radar Image


Sun Almanac for Union, Wisconsin
Sunrise: 06:21 AM
Sunset: 7:47 PM
Civil Sunrise:05:51 AM
Civil Sunset: 8:16 PM
Nautical Sunrise: 05:16 AM
Nautical Sunset: 8:52 PM
Astro Sunrise: 04:38 AM
Astro Sunset: 9:29 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.