Harwich Center, MA Weather & Growing Conditions
This Afternoon
75°F
Sunny
Sunny, with a high near 75. North wind 5 to 8 mph, with gusts as high as 21 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Sunny | 5 to 8 mph N | 1% |
| Tonight | 55°F | Partly Cloudy | 1 to 12 mph N | 0% |
| Saturday | 63°F | Mostly Sunny | 6 to 12 mph NE | 0% |
| Saturday Night | 46°F | Partly Cloudy | 5 mph E | 0% |
| Sunday | 66°F | Mostly Cloudy then Chance Rain Showers | 5 to 9 mph SE | 49% |
| Sunday Night | 58°F | Rain Showers | 8 mph E | 88% |
| Monday | 65°F | Rain Showers Likely | 9 to 15 mph NE | 66% |
| Monday Night | 53°F | Slight Chance Rain Showers | 9 to 15 mph NE | 19% |
| Tuesday | 66°F | Slight Chance Rain Showers then Mostly Cloudy | 16 mph NE | 17% |
| Tuesday Night | 54°F | Mostly Cloudy | 17 mph NE | 8% |
| Wednesday | 66°F | Partly Sunny | 20 mph NE | 11% |
| Wednesday Night | 54°F | Mostly Cloudy then Slight Chance Rain Showers | 20 mph NE | 22% |
| Thursday | 66°F | Chance Rain Showers | 21 mph NE | 31% |
| Thursday Night | 53°F | Chance Rain Showers | 16 to 20 mph NE | 41% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harwich Center, MA
Last spring frost
Apr 13
First fall frost
Nov 4
Growing season
206 days
Hardiness zone
7b
Explore more for Harwich Center, MA: full frost dates · planting calendar · Massachusetts frost dates
Climate data from the nearest NOAA station, Chatham Muni Ap, Ma (3.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.