East Harwich, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for East Harwich, a community in Barnstable County, Massachusetts.
Tonight
49°F
Partly Cloudy
Partly cloudy, with a low around 49. East wind around 5 mph.
7-day forecast for East Harwich
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Partly Cloudy | 5 mph E | 0% |
| Sunday | 65°F | Mostly Cloudy then Rain Showers | 5 to 12 mph SE | 96% |
| Sunday Night | 60°F | Rain Showers | 5 to 10 mph E | 96% |
| Monday | 67°F | Chance Rain Showers then Mostly Cloudy | 8 to 15 mph NE | 50% |
| Monday Night | 55°F | Mostly Cloudy | 8 to 12 mph NE | 2% |
| Tuesday | 66°F | Partly Sunny | 14 mph NE | 4% |
| Tuesday Night | 55°F | Mostly Cloudy | 12 to 15 mph NE | 3% |
| Wednesday | 66°F | Partly Sunny | 17 mph NE | 4% |
| Wednesday Night | 54°F | Mostly Cloudy then Slight Chance Rain Showers | 15 to 18 mph NE | 17% |
| Thursday | 67°F | Chance Rain Showers | 20 mph NE | 31% |
| Thursday Night | 55°F | Chance Rain Showers | 22 mph NE | 42% |
| Friday | 67°F | Chance Rain Showers | 23 mph NE | 46% |
| Friday Night | 54°F | Chance Rain Showers | 23 mph NE | 45% |
| Saturday | 67°F | Chance Rain Showers | 21 mph NE | 42% |
Forecast source: National Weather Service (api.weather.gov) for East Harwich (41.709, -70.032). Updated through the day.
Growing snapshot for East Harwich
Last spring frost
Apr 13
First fall frost
Nov 4
Growing season
206 days
Hardiness zone
7b
More local growing data for East Harwich: nearby ZIP 02659 weather · frost dates · planting calendar · Massachusetts frost dates
Nearby towns & communities
Barnstable Town
Bourne
Brewster
Buzzards Bay
Chatham
Dennis
Dennis Port
East Dennis
East Falmouth
East Sandwich
Falmouth
Forestdale
Harwich Center
Harwich Port
Mashpee Neck
Monomoscoy Island
Monument Beach
New Seabury
North Eastham
North Falmouth
Northwest Harwich
Orleans
Pocasset
Popponesset
Popponesset Island
Provincetown
Sagamore
Sandwich
Seabrook
Seconsett Island
Climate data from the nearest NOAA station, Chatham Muni Ap, Ma (1.6 mi from East Harwich). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.