Plainfield, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plainfield, a community in Sullivan County, New Hampshire.
Tonight
43°F
Partly Cloudy
Partly cloudy, with a low around 43. North wind 0 to 5 mph.
7-day forecast for Plainfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 43°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 66°F | Sunny | 0 to 5 mph N | 0% |
| Saturday Night | 44°F | Partly Cloudy | 0 mph | 0% |
| Sunday | 60°F | Rain Showers | 0 to 5 mph SE | 91% |
| Sunday Night | 48°F | Rain Showers | 0 to 5 mph NE | 83% |
| Monday | 64°F | Mostly Sunny | 5 mph N | 1% |
| Monday Night | 43°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Tuesday | 63°F | Partly Sunny | 0 to 5 mph NE | 1% |
| Tuesday Night | 42°F | Mostly Cloudy | 0 mph | 2% |
| Wednesday | 62°F | Mostly Sunny | 0 to 5 mph E | 4% |
| Wednesday Night | 42°F | Mostly Cloudy | 0 to 5 mph E | 11% |
| Thursday | 60°F | Slight Chance Rain Showers | 0 to 5 mph E | 22% |
| Thursday Night | 45°F | Chance Rain Showers | 0 mph | 29% |
| Friday | 66°F | Chance Rain Showers | 0 to 5 mph N | 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 Sep 19, 2026.