Hillsboro, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hillsboro, a city in Juneau County, Wisconsin.
This Afternoon
64°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Cloudy, with a high near 64. East wind around 3 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Hillsboro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Chance Showers And Thunderstorms | 3 mph E | 43% |
| Tonight | 52°F | Chance Showers And Thunderstorms | 5 to 9 mph NE | 48% |
| Sunday | 68°F | Partly Sunny | 9 to 13 mph NE | 13% |
| Sunday Night | 46°F | Mostly Cloudy | 8 to 12 mph NE | 4% |
| Monday | 62°F | Mostly Cloudy then Chance Rain Showers | 12 mph NE | 25% |
| Monday Night | 43°F | Chance Rain Showers | 5 to 9 mph NE | 25% |
| Tuesday | 61°F | Slight Chance Rain Showers then Partly Sunny | 5 to 9 mph NE | 24% |
| Tuesday Night | 43°F | Partly Cloudy | 2 to 6 mph NE | 3% |
| Wednesday | 65°F | Mostly Sunny | 2 to 8 mph NE | 2% |
| Wednesday Night | 45°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 67°F | Partly Sunny then Slight Chance Rain Showers | 0 to 3 mph E | 15% |
| Thursday Night | 48°F | Slight Chance Rain Showers then Mostly Cloudy | 2 mph NE | 15% |
| Friday | 71°F | Partly Sunny | 2 mph NE | 5% |
| Friday Night | 49°F | Partly Cloudy | 1 mph NE | 5% |
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 Sep 20, 2026.