Amherst, NH Weather & Growing Conditions
Tonight
45°F
Partly Cloudy
Partly cloudy, with a low around 45. Northwest wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Partly Cloudy | 0 to 5 mph NW | 0% |
| Saturday | 67°F | Sunny | 0 to 5 mph NE | 0% |
| Saturday Night | 45°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Sunday | 61°F | Rain Showers | 0 to 5 mph SE | 81% |
| Sunday Night | 49°F | Rain Showers | 0 to 5 mph NE | 80% |
| Monday | 65°F | Slight Chance Rain Showers then Mostly Sunny | 5 mph N | 20% |
| Monday Night | 46°F | Partly Cloudy | 0 to 5 mph N | 3% |
| Tuesday | 61°F | Mostly Cloudy | 5 mph NE | 3% |
| Tuesday Night | 44°F | Mostly Cloudy | 0 to 5 mph NE | 2% |
| Wednesday | 60°F | Mostly Sunny | 5 to 10 mph NE | 4% |
| Wednesday Night | 44°F | Mostly Cloudy then Slight Chance Rain Showers | 0 to 5 mph NE | 19% |
| Thursday | 59°F | Chance Rain Showers | 5 to 10 mph NE | 27% |
| Thursday Night | 46°F | Chance Rain Showers | 0 to 5 mph NE | 29% |
| Friday | 64°F | Chance Rain Showers | 5 mph N | 31% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Amherst, NH
Last spring frost
May 3
First fall frost
Oct 5
Growing season
156 days
Hardiness zone
6a
Explore more for Amherst, NH: full frost dates · planting calendar · New Hampshire frost dates
Climate data from the nearest NOAA station, Milford, Nh (3.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.