New Boston, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Boston, a community in Hillsborough County, New Hampshire.
Overnight
49°F
Mostly Clear
Mostly clear, with a low around 49. Southwest wind around 0 mph.
7-day forecast for New Boston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Mostly Clear | 0 mph | 2% |
| Wednesday | 74°F | Mostly Sunny | 0 to 5 mph SW | 3% |
| Wednesday Night | 55°F | Partly Cloudy | 5 mph SW | 2% |
| Thursday | 70°F | Mostly Cloudy then Chance Light Rain | 5 to 10 mph S | 44% |
| Thursday Night | 58°F | Chance Light Rain | 0 to 5 mph SW | 37% |
| Friday | 68°F | Light Rain Likely | 0 mph | 70% |
| Friday Night | 52°F | Light Rain | 0 mph | 84% |
| Saturday | 62°F | Light Rain Likely | 0 to 5 mph N | 66% |
| Saturday Night | 42°F | Chance Light Rain | 5 mph NW | 38% |
| Sunday | 56°F | Chance Light Rain then Partly Sunny | 5 to 10 mph NW | 29% |
| Sunday Night | 35°F | Partly Cloudy | 0 to 5 mph W | 7% |
| Monday | 53°F | Mostly Sunny then Slight Chance Light Rain | 5 to 10 mph W | 15% |
| Monday Night | 33°F | Partly Cloudy | 5 mph W | 13% |
| Tuesday | 55°F | Mostly Sunny | 5 to 10 mph W | 7% |
Forecast source: National Weather Service (api.weather.gov) for New Boston (42.978, -71.694). Updated through the day.
Growing snapshot for New Boston
Last spring frost
May 2
First fall frost
Oct 8
Growing season
158 days
Hardiness zone
6a
More local growing data for New Boston: nearby ZIP 03070 weather · frost dates · planting calendar · New Hampshire frost dates
Nearby towns & communities
Amherst
Antrim
Bennington
East Merrimack
Francestown
Goffstown
Greenville
Hancock
Hillsborough
Hudson
Klondike Corner
Manchester
Milford
Nashua
Peterborough
Pinardville
South Hooksett
Wilton
Climate data from the nearest NOAA station, Weare, Nh (7.9 mi from New Boston). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.