Plainfield, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plainfield, a community in Sullivan County, New Hampshire.
Today
84°F
Sunny
Sunny, with a high near 84. West wind 0 to 5 mph.
7-day forecast for Plainfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Sunny | 0 to 5 mph W | 0% |
| Tonight | 58°F | Mostly Clear then Areas Of Fog | 0 to 5 mph S | 0% |
| Wednesday | 86°F | Areas Of Fog then Partly Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 64°F | Partly Cloudy | 0 to 5 mph S | 9% |
| Thursday | 88°F | Chance Rain Showers | 0 to 5 mph SW | 44% |
| Thursday Night | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 39% |
| Friday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 27% |
| Friday Night | 66°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 25% |
| Saturday | 87°F | Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph W | 47% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 41% |
| Sunday | 88°F | Sunny | 0 to 5 mph W | 9% |
| Sunday Night | 66°F | Mostly Clear | 0 to 5 mph SW | 11% |
| Monday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SW | 30% |
| Monday Night | 63°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 29% |
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 Aug 4, 2026.