Hillsboro, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hillsboro, a city in Juneau County, Wisconsin.
Overnight
54°F
Chance Rain Showers
A chance of rain showers. Cloudy. Low around 54, with temperatures rising to around 57 overnight. South wind around 8 mph, with gusts as high as 18 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Hillsboro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Chance Rain Showers | 8 mph S | 30% |
| Wednesday | 60°F | Rain Showers Likely | 8 to 13 mph S | 65% |
| Wednesday Night | 43°F | Rain Showers Likely | 8 to 12 mph SW | 68% |
| Thursday | 54°F | Rain Showers | 7 to 13 mph NW | 75% |
| Thursday Night | 33°F | Mostly Cloudy | 7 to 12 mph N | 4% |
| Friday | 48°F | Partly Sunny | 2 to 8 mph N | 0% |
| Friday Night | 26°F | Mostly Clear | 1 mph N | 0% |
| Saturday | 51°F | Sunny | 0 to 5 mph W | 0% |
| Saturday Night | 31°F | Mostly Clear | 3 mph W | 3% |
| Sunday | 56°F | Sunny | 3 to 10 mph W | 6% |
| Sunday Night | 32°F | Mostly Clear | 0 to 3 mph W | 0% |
| Monday | 61°F | Mostly Sunny | 1 to 12 mph SW | 0% |
| Monday Night | 37°F | Mostly Clear | 2 to 6 mph W | 0% |
| Tuesday | 60°F | Sunny | 2 to 6 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Hillsboro (43.656, -90.334). Updated through the day.
Growing snapshot for Hillsboro
Last spring frost
May 5
First fall frost
Oct 4
Growing season
153 days
Hardiness zone
4b
More local growing data for Hillsboro: nearby ZIP 53962 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Camp Douglas
Elroy
Hustler
Lyndon Station
Mauston
Necedah
New Lisbon
Oakdale
Union Center
Wonewoc
Wyeville
Climate data from the nearest NOAA station, Hillsboro, Wi (4 mi from Hillsboro). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.