Green Harbor, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Green Harbor, a community in Plymouth County, Massachusetts.
Today
61°F
Mostly Sunny
Mostly sunny, with a high near 61. Northeast wind 6 to 15 mph, with gusts as high as 25 mph.
7-day forecast for Green Harbor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 61°F | Mostly Sunny | 6 to 15 mph NE | 0% |
| Tonight | 55°F | Partly Cloudy | 6 mph SE | 0% |
| Sunday | 63°F | Mostly Cloudy then Chance Rain Showers | 6 to 12 mph SE | 79% |
| Sunday Night | 57°F | Rain Showers | 8 to 18 mph E | 82% |
| Monday | 62°F | Chance Rain Showers then Partly Sunny | 14 to 21 mph N | 29% |
| Monday Night | 55°F | Mostly Cloudy | 9 to 17 mph NE | 2% |
| Tuesday | 60°F | Mostly Cloudy | 18 mph NE | 5% |
| Tuesday Night | 56°F | Mostly Cloudy | 16 to 20 mph NE | 2% |
| Wednesday | 60°F | Partly Sunny | 21 to 25 mph NE | 3% |
| Wednesday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 21 to 25 mph NE | 22% |
| Thursday | 60°F | Chance Rain Showers | 25 to 31 mph NE | 34% |
| Thursday Night | 56°F | Chance Rain Showers | 23 to 30 mph NE | 40% |
| Friday | 60°F | Chance Rain Showers | 26 to 33 mph NE | 40% |
| Friday Night | 56°F | Chance Showers And Thunderstorms | 26 to 33 mph NE | 45% |
Forecast source: National Weather Service (api.weather.gov) for Green Harbor (42.066, -70.649). Updated through the day.
Growing snapshot for Green Harbor
Last spring frost
Apr 15
First fall frost
Nov 1
Growing season
198 days
Hardiness zone
7a
More local growing data for Green Harbor: nearby ZIP 02332 weather · frost dates · planting calendar · Massachusetts frost dates
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Climate data from the nearest NOAA station, Plymouth-Kingston, Ma (4.3 mi from Green Harbor). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.