Plymouth, NH Weather & Growing Conditions
Today
69°F
Mostly Sunny
Mostly sunny. High near 69, with temperatures falling to around 62 in the afternoon. Southwest wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Mostly Sunny | 0 to 5 mph SW | 3% |
| Tonight | 46°F | Partly Cloudy | 0 to 5 mph SW | 2% |
| Thursday | 63°F | Light Rain | 5 mph S | 77% |
| Thursday Night | 52°F | Chance Light Rain | 0 to 5 mph SW | 46% |
| Friday | 63°F | Chance Light Rain | 0 mph | 34% |
| Friday Night | 46°F | Light Rain Likely | 0 mph | 68% |
| Saturday | 56°F | Chance Light Rain | 0 to 5 mph N | 53% |
| Saturday Night | 39°F | Chance Light Rain | 0 to 5 mph NW | 46% |
| Sunday | 49°F | Chance Light Rain | 5 to 10 mph NW | 38% |
| Sunday Night | 32°F | Slight Chance Light Rain | 5 mph NW | 20% |
| Monday | 46°F | Chance Light Rain | 5 to 10 mph NW | 27% |
| Monday Night | 28°F | Slight Chance Light Rain then Partly Cloudy | 5 mph W | 18% |
| Tuesday | 48°F | Mostly Sunny then Slight Chance Light Rain | 5 to 10 mph W | 15% |
| Tuesday Night | 28°F | Slight Chance Light Rain then Mostly Cloudy | 5 to 10 mph W | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Plymouth, NH
Last spring frost
May 12
First fall frost
Oct 6
Growing season
146 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, Wentworth, Nh (6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.