Plymouth, NH Weather & Growing Conditions
Today
81°F
Sunny
Sunny, with a high near 81. West wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Sunny | 5 to 10 mph W | 0% |
| Tonight | 57°F | Mostly Clear then Areas Of Fog | 0 to 5 mph W | 0% |
| Wednesday | 85°F | Areas Of Fog then Partly Sunny | 0 to 5 mph W | 0% |
| Wednesday Night | 63°F | Partly Cloudy | 0 to 5 mph W | 6% |
| Thursday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 38% |
| Thursday Night | 66°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 33% |
| Friday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 24% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph NW | 23% |
| Saturday | 85°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph W | 43% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 38% |
| Sunday | 87°F | Sunny | 0 to 5 mph W | 10% |
| Sunday Night | 64°F | Mostly Clear | 0 to 5 mph W | 11% |
| Monday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph W | 34% |
| Monday Night | 60°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 33% |
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 Aug 4, 2026.