Union Center, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Union Center, a village in Juneau County, Wisconsin.
Today
64°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a high near 64. East wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Union Center
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Showers And Thunderstorms | 7 mph E | 92% |
| Tonight | 52°F | Showers And Thunderstorms Likely | 8 mph NE | 61% |
| Sunday | 66°F | Slight Chance Rain Showers then Mostly Cloudy | 8 to 13 mph NE | 24% |
| Sunday Night | 46°F | Mostly Cloudy | 10 mph NE | 4% |
| Monday | 62°F | Mostly Cloudy | 8 to 12 mph NE | 9% |
| Monday Night | 42°F | Mostly Cloudy | 3 to 8 mph NE | 9% |
| Tuesday | 61°F | Mostly Sunny | 3 to 9 mph NE | 6% |
| Tuesday Night | 41°F | Mostly Clear | 1 to 6 mph NE | 3% |
| Wednesday | 66°F | Sunny | 1 to 7 mph NE | 2% |
| Wednesday Night | 44°F | Mostly Clear | 0 to 3 mph NE | 2% |
| Thursday | 67°F | Mostly Sunny | 0 to 3 mph NE | 4% |
| Thursday Night | 45°F | Partly Cloudy | 2 mph NE | 4% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph E | 5% |
| Friday Night | 46°F | Partly Cloudy | 2 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Union Center (43.683, -90.263). Updated through the day.
Growing snapshot for Union Center
Last spring frost
May 5
First fall frost
Oct 4
Growing season
153 days
Hardiness zone
4b
More local growing data for Union Center: nearby ZIP 53962 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Camp Douglas
Elroy
Hillsboro
Hustler
Lyndon Station
Mauston
Necedah
New Lisbon
Oakdale
Wonewoc
Wyeville
Climate data from the nearest NOAA station, Hillsboro, Wi (4 mi from Union Center). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.