Hillsboro, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hillsboro, a city in Juneau County, Wisconsin.
Overnight
62°F
Mostly Cloudy
Mostly cloudy, with a low around 62. South wind around 7 mph.
7-day forecast for Hillsboro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Mostly Cloudy | 7 mph S | 0% |
| Tuesday | 79°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 6 to 12 mph SW | 26% |
| Tuesday Night | 59°F | Chance Showers And Thunderstorms | 1 to 6 mph NW | 50% |
| Wednesday | 77°F | Partly Sunny | 5 mph NW | 10% |
| Wednesday Night | 53°F | Partly Cloudy | 0 to 3 mph SW | 2% |
| Thursday | 81°F | Sunny | 0 to 3 mph S | 2% |
| Thursday Night | 57°F | Mostly Clear | 2 mph S | 0% |
| Friday | 83°F | Sunny | 0 to 8 mph SW | 4% |
| Friday Night | 62°F | Mostly Clear | 3 to 8 mph SW | 11% |
| Saturday | 85°F | Mostly Sunny | 3 to 8 mph SW | 11% |
| Saturday Night | 66°F | Partly Cloudy then Chance Rain Showers | 3 to 7 mph SW | 32% |
| Sunday | 85°F | Chance Rain Showers | 5 to 9 mph W | 32% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 1 to 7 mph S | 45% |
| Monday | 83°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 2 to 6 mph S | 45% |
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 Aug 4, 2026.