East Harwich, MA Weather & Growing Conditions
Today
65°F
Sunny
Sunny. High near 65, with temperatures falling to around 59 in the afternoon. Southwest wind 7 to 12 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 65°F | Sunny | 7 to 12 mph SW | 4% |
| Tonight | 56°F | Partly Cloudy then Patchy Fog | 9 mph SW | 3% |
| Thursday | 66°F | Patchy Fog | 7 to 12 mph SW | 2% |
| Thursday Night | 58°F | Light Rain Likely | 10 mph SW | 57% |
| Friday | 65°F | Light Rain | 12 mph S | 92% |
| Friday Night | 55°F | Light Rain | 9 mph S | 96% |
| Saturday | 62°F | Light Rain | 10 mph S | 89% |
| Saturday Night | 45°F | Slight Chance T-storms | 7 to 10 mph W | 24% |
| Sunday | 57°F | Slight Chance Light Rain then Mostly Sunny | 8 to 12 mph W | 18% |
| Sunday Night | 42°F | Partly Cloudy | 9 mph W | 10% |
| Monday | 56°F | Chance Light Rain | 10 to 14 mph W | 31% |
| Monday Night | 39°F | Chance Light Rain then Partly Cloudy | 12 mph W | 25% |
| Tuesday | 56°F | Sunny | 14 mph W | 8% |
| Tuesday Night | 39°F | Partly Cloudy | 13 mph W | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for East Harwich, MA
Last spring frost
Apr 13
First fall frost
Nov 4
Growing season
206 days
Hardiness zone
7b
Explore more for East Harwich, MA: full frost dates · planting calendar · Massachusetts frost dates
Climate data from the nearest NOAA station, Chatham Muni Ap, Ma (1.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.