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Hillsborough, NH Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Hillsborough, a community in Hillsborough County, New Hampshire.

Overnight
46°F
Partly Cloudy
Partly cloudy, with a low around 46. Northwest wind around 0 mph.

7-day forecast for Hillsborough

WhenTempForecastWindPrecip
Overnight 46°F Partly Cloudy 0 mph 0%
Saturday 65°F Sunny 0 mph 0%
Saturday Night 43°F Partly Cloudy 0 mph 0%
Sunday 56°F Chance Rain Showers then Rain 0 to 5 mph SE 96%
Sunday Night 43°F Rain then Chance Rain Showers 0 to 5 mph NE 89%
Monday 63°F Mostly Sunny 5 mph N 2%
Monday Night 41°F Mostly Cloudy 0 to 5 mph N 1%
Tuesday 61°F Partly Sunny 0 to 5 mph NE 1%
Tuesday Night 40°F Partly Cloudy 0 to 5 mph NE 1%
Wednesday 61°F Mostly Sunny 5 to 10 mph NE 1%
Wednesday Night 40°F Mostly Cloudy 0 to 5 mph NE 14%
Thursday 60°F Chance Rain Showers 5 mph NE 32%
Thursday Night 42°F Chance Rain Showers 0 to 5 mph NE 32%
Friday 62°F Chance Rain Showers 5 to 10 mph N 33%

Forecast source: National Weather Service (api.weather.gov) for Hillsborough (43.116, -71.897). Updated through the day.

Growing snapshot for Hillsborough

Last spring frost
May 9
First fall frost
Oct 5
Growing season
148 days
Hardiness zone
6a

More local growing data for Hillsborough: nearby ZIP 03244 weather · frost dates · planting calendar · New Hampshire frost dates

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Climate data from the nearest NOAA station, Weare 2 Ne, Nh (8.4 mi from Hillsborough). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.