Plymouth, NH Weather & Growing Conditions
Today
73°F
Mostly Sunny
Mostly sunny. High near 73, with temperatures falling to around 65 in the afternoon. West wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Mostly Sunny | 0 mph | 3% |
| Tonight | 48°F | Partly Cloudy | 0 mph | 2% |
| Thursday | 66°F | Light Rain | 0 to 5 mph S | 75% |
| Thursday Night | 53°F | Chance Light Rain | 0 mph | 50% |
| Friday | 66°F | Chance Light Rain | 0 mph | 37% |
| Friday Night | 49°F | Light Rain Likely | 0 mph | 71% |
| Saturday | 60°F | Light Rain Likely | 0 mph | 58% |
| Saturday Night | 40°F | Chance Light Rain | 0 to 5 mph NW | 46% |
| Sunday | 52°F | Chance Light Rain | 0 to 5 mph NW | 38% |
| Sunday Night | 32°F | Mostly Cloudy then Slight Chance Light Rain | 0 mph | 18% |
| Monday | 48°F | Chance Light Rain | 0 to 10 mph NW | 25% |
| Monday Night | 29°F | Slight Chance Light Rain then Partly Cloudy | 5 mph NW | 20% |
| Tuesday | 50°F | Mostly Sunny then Slight Chance Light Rain | 5 to 10 mph W | 16% |
| Tuesday Night | 29°F | Slight Chance Light Rain then Mostly Cloudy | 5 mph W | 17% |
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
5a
Explore more for Plymouth, NH: full frost dates · planting calendar · New Hampshire frost dates
Climate data from the nearest NOAA station, Plymouth, Nh (5.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.