Plainfield, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plainfield, a community in Sullivan County, New Hampshire.
This Afternoon
64°F
Isolated Rain Showers
Isolated rain showers before 4pm. Cloudy, with a high near 64. South wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Plainfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Isolated Rain Showers | 5 mph S | 23% |
| Tonight | 47°F | Mostly Cloudy | 0 mph | 5% |
| Wednesday | 75°F | Partly Sunny | 0 to 5 mph SW | 4% |
| Wednesday Night | 52°F | Partly Cloudy | 0 to 5 mph S | 1% |
| Thursday | 68°F | Light Rain Likely | 5 mph S | 71% |
| Thursday Night | 56°F | Scattered Rain Showers | 0 to 5 mph SW | 30% |
| Friday | 67°F | Chance Light Rain | 0 mph | 53% |
| Friday Night | 50°F | Light Rain Likely | 0 mph | 71% |
| Saturday | 61°F | Light Rain Likely | 0 to 5 mph NW | 65% |
| Saturday Night | 41°F | Chance Light Rain | 0 to 5 mph W | 51% |
| Sunday | 56°F | Chance Light Rain | 5 mph W | 28% |
| Sunday Night | 33°F | Mostly Cloudy | 0 to 5 mph W | 11% |
| Monday | 54°F | Chance Light Rain | 5 to 10 mph W | 25% |
| Monday Night | 32°F | Chance Light Rain | 5 mph W | 25% |
Forecast source: National Weather Service (api.weather.gov) for Plainfield (43.535, -72.354). Updated through the day.
Growing snapshot for Plainfield
Last spring frost
May 8
First fall frost
Oct 6
Growing season
150 days
Hardiness zone
5a
More local growing data for Plainfield: nearby ZIP 03781 weather · frost dates · planting calendar · New Hampshire frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, N Hartland Lake, Vt (4.3 mi from Plainfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.