Union, Wisconsin Weather
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Weather Forecast for Union, Wisconsin : Grant County
Issued: 5:16 pm CDT Oct 22, 2025 Latitude: 42.8302694 Longitude: -90.5262388 View on Google Maps

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Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Mostly Clear on Tonight Sunny on Thursday Sunny on Friday Mostly Sunny on Saturday Partly Sunny on Sunday 20% chance of rain on Monday 40% chance of on Tuesday 30% chance of rain on Wednesday
Low: 32°F High: 52°F High: 55°F High: 59°F High: 60°F High: 58°F High: 58°F High: 54°F
Low: 29°F Low: 34°F Low: 41°F Low: 44°F Low: 44°F Low: 41°F  
Mostly Clear Sunny Sunny Mostly Sunny Partly Sunny Rain Partly Sunny Rain
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Current Conditions at
BOSCOBEL - (KOVS)
46°
Feels like 41°F
Cloudy
as of 4:53 PM CDST
Rel. Humidity: 61%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
12 MPH
300° Northwest
Cloud Level(s): Solid Overcast at 3700ft
Current Conditions at
LONE ROCK - (KLNR)
48°
Feels like 42°F
Cloudy
as of 4:56 PM CDST
Rel. Humidity: 61%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: VFR
Wind Data
15 MPH
280° West
Cloud Level(s): Solid Overcast at 4600ft
Current Conditions at
DUBUQUE - (KDBQ)
48°
Feels like 42°F
Mostly Clear
as of 4:53 PM CDST
Rel. Humidity: 61%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 29.97 in.
Flight Rule: VFR
Wind Data
13 MPH
330° Northwest
Cloud Level(s): Few at 3900ft
Mostly Clear on Tonight Tonight... Widespread frost, mainly after 3am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 32. Northwest wind 6 to 14 mph, with gusts as high as 23 mph.
Sunny on Thursday Thursday... Widespread frost before 9am. Otherwise, sunny, with a high near 52. Northwest wind 6 to 11 mph.
Mostly Clear on Thursday Night Thursday Night... Widespread frost, mainly after midnight. Otherwise, mostly clear, with a low around 29. Northwest wind around 5 mph becoming calm in the evening.
Sunny on Friday Friday... Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 55. Light and variable wind.
Mostly Clear on Friday Night Friday Night... Areas of frost after 1am. Otherwise, mostly clear, with a low around 34. Light southeast wind.
Mostly Sunny on Saturday Saturday... Areas of frost before 8am. Otherwise, mostly sunny, with a high near 59. South wind 5 to 9 mph.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 41. Southeast wind around 7 mph.
Partly Sunny on Sunday Sunday... Partly sunny, with a high near 60. Southeast wind 6 to 11 mph.
20% chance of rain Sunday Night Sunday Night... A 20 percent chance of showers. Mostly cloudy, with a low around 44. Southeast wind 8 to 10 mph, with gusts as high as 18 mph.
20% chance of rain Monday Monday... A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 58. Southeast wind 9 to 14 mph, with gusts as high as 23 mph.
50% chance of rain Monday Night Monday Night... A 50 percent chance of showers. Mostly cloudy, with a low around 44. Southeast wind 10 to 13 mph, with gusts as high as 21 mph.
40% chance of Tuesday Tuesday... A 40 percent chance of showers. Partly sunny, with a high near 58. East wind 10 to 13 mph.
50% chance of rain Tuesday Night Tuesday Night... A 50 percent chance of showers. Mostly cloudy, with a low around 41. East wind 8 to 10 mph, with gusts as high as 18 mph.
30% chance of rain Wednesday Wednesday... A 30 percent chance of showers. Mostly sunny, with a high near 54. Northwest wind 10 to 14 mph, with gusts as high as 22 mph.
Current Radar Image


Sun Almanac for Union, Wisconsin
Sunrise: 07:25 AM
Sunset: 6:08 PM
Civil Sunrise:06:56 AM
Civil Sunset: 6:37 PM
Nautical Sunrise: 06:23 AM
Nautical Sunset: 7:10 PM
Astro Sunrise: 05:50 AM
Astro Sunset: 7:43 PM
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