Plymouth, NH Weather & Growing Conditions
Tonight
44°F
Mostly Cloudy
Mostly cloudy, with a low around 44. South wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 44°F | Mostly Cloudy | 0 mph | 11% |
| Wednesday | 73°F | Partly Sunny | 0 to 5 mph W | 6% |
| Wednesday Night | 47°F | Partly Cloudy | 0 mph | 2% |
| Thursday | 66°F | Scattered Rain Showers then Light Rain Likely | 0 to 5 mph SW | 58% |
| Thursday Night | 54°F | Scattered Rain Showers | 0 to 5 mph SW | 27% |
| Friday | 64°F | Chance Light Rain | 0 mph | 54% |
| Friday Night | 49°F | Light Rain | 0 mph | 75% |
| Saturday | 58°F | Light Rain Likely | 0 to 5 mph N | 66% |
| Saturday Night | 40°F | Light Rain Likely | 0 to 5 mph W | 57% |
| Sunday | 53°F | Chance Light Rain | 5 to 10 mph NW | 33% |
| Sunday Night | 32°F | Partly Cloudy | 0 to 5 mph W | 12% |
| Monday | 50°F | Chance Light Rain | 5 to 10 mph NW | 25% |
| Monday Night | 30°F | Slight Chance Light Rain | 5 mph NW | 23% |
| Tuesday | 50°F | Slight Chance Light Rain | 5 to 10 mph W | 24% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Plymouth, NH
Last spring frost
May 20
First fall frost
Sep 27
Growing season
128 days
Hardiness zone
5b
Explore more for Plymouth, NH: full frost dates · planting calendar · New Hampshire frost dates
Climate data from the nearest NOAA station, Plymouth, Nh (4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.