Amherst, NH Weather & Growing Conditions

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

Today

86°F

Sunny

Sunny, with a high near 86. West wind 0 to 10 mph.

7-day forecast for Amherst

When	Temp	Forecast	Wind	Precip
Today	86°F	Sunny	0 to 10 mph W	0%
Tonight	59°F	Mostly Clear	0 to 5 mph W	0%
Wednesday	86°F	Partly Sunny	0 to 5 mph SW	0%
Wednesday Night	66°F	Partly Cloudy	0 to 5 mph SW	7%
Thursday	89°F	Mostly Sunny then Slight Chance Showers And Thunderstorms	0 to 5 mph SW	39%
Thursday Night	70°F	Chance Showers And Thunderstorms then Partly Cloudy	0 to 5 mph SW	34%
Friday	91°F	Sunny then Chance Showers And Thunderstorms	0 to 5 mph W	28%
Friday Night	68°F	Chance Showers And Thunderstorms	0 to 5 mph W	26%
Saturday	88°F	Slight Chance Rain Showers then Chance Showers And Thunderstorms	0 to 5 mph W	40%
Saturday Night	67°F	Chance Showers And Thunderstorms then Partly Cloudy	0 to 5 mph W	36%
Sunday	89°F	Sunny	0 to 5 mph W	10%
Sunday Night	68°F	Mostly Clear	0 to 5 mph W	9%
Monday	89°F	Sunny	0 to 10 mph W	14%
Monday Night	66°F	Mostly Clear	5 to 10 mph W	14%

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

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

All New Hampshire locations ›

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 Aug 4, 2026.