Amherst, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Amherst, a community in Hillsborough County, New Hampshire.
Tonight
48°F
Mostly Cloudy
Mostly cloudy, with a low around 48. Southwest wind around 0 mph.
7-day forecast for Amherst
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Mostly Cloudy | 0 mph | 2% |
| Wednesday | 76°F | Mostly Sunny | 0 to 5 mph SW | 5% |
| Wednesday Night | 55°F | Partly Cloudy | 0 to 5 mph SW | 2% |
| Thursday | 73°F | Scattered Rain Showers | 0 to 10 mph SW | 39% |
| Thursday Night | 59°F | Scattered Rain Showers | 0 to 5 mph SW | 47% |
| Friday | 70°F | Light Rain | 0 mph | 76% |
| Friday Night | 53°F | Light Rain | 0 mph | 80% |
| Saturday | 63°F | Light Rain Likely | 0 to 5 mph NW | 71% |
| Saturday Night | 41°F | Light Rain Likely | 0 to 5 mph NW | 55% |
| Sunday | 59°F | Slight Chance Light Rain then Mostly Sunny | 5 mph W | 24% |
| Sunday Night | 35°F | Partly Cloudy | 0 to 5 mph W | 11% |
| Monday | 57°F | Mostly Sunny then Slight Chance Light Rain | 5 to 10 mph W | 19% |
| Monday Night | 33°F | Slight Chance Light Rain | 5 mph W | 19% |
| Tuesday | 58°F | Mostly Sunny | 5 to 10 mph W | 12% |
Forecast source: National Weather Service (api.weather.gov) for Amherst (42.864, -71.624). Updated through the day.
Growing snapshot for Amherst
Last spring frost
May 3
First fall frost
Oct 5
Growing season
156 days
Hardiness zone
6a
More local growing data for Amherst: nearby ZIP 03031 weather · frost dates · planting calendar · New Hampshire frost dates
Nearby towns & communities
Antrim
Bennington
East Merrimack
Francestown
Goffstown
Greenville
Hancock
Hillsborough
Hudson
Klondike Corner
Manchester
Milford
Nashua
New Boston
Peterborough
Pinardville
South Hooksett
Wilton
Climate data from the nearest NOAA station, Milford, Nh (3.5 mi from Amherst). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.