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.
Today
82°F
Sunny
Sunny, with a high near 82. West wind 0 to 10 mph.
7-day forecast for New Boston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 0 to 10 mph W | 0% |
| Tonight | 59°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Wednesday | 84°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 65°F | Partly Cloudy | 0 to 5 mph SW | 7% |
| Thursday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 41% |
| Thursday Night | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 35% |
| Friday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 25% |
| Friday Night | 67°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 24% |
| Saturday | 85°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph W | 41% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph W | 36% |
| Sunday | 86°F | Sunny | 0 to 5 mph W | 9% |
| Sunday Night | 66°F | Mostly Clear | 0 to 5 mph W | 8% |
| Monday | 86°F | Sunny then Slight Chance Rain Showers | 0 to 10 mph W | 15% |
| Monday Night | 64°F | Mostly Clear | 5 to 10 mph W | 14% |
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 Aug 4, 2026.