Harwich Center, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harwich Center, a community in Barnstable County, Massachusetts.
Today
79°F
Mostly Sunny
Mostly sunny, with a high near 79. Southwest wind 3 to 8 mph.
7-day forecast for Harwich Center
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Mostly Sunny | 3 to 8 mph SW | 0% |
| Tonight | 67°F | Mostly Cloudy then Slight Chance Rain Showers | 2 to 8 mph S | 16% |
| Wednesday | 79°F | Slight Chance Rain Showers then Mostly Sunny | 2 to 9 mph NW | 18% |
| Wednesday Night | 70°F | Mostly Cloudy | 5 to 8 mph SW | 4% |
| Thursday | 82°F | Mostly Sunny | 5 to 12 mph SW | 4% |
| Thursday Night | 72°F | Partly Cloudy | 7 to 10 mph SW | 2% |
| Friday | 84°F | Mostly Sunny | 8 to 13 mph SW | 3% |
| Friday Night | 72°F | Partly Cloudy | 6 to 12 mph SW | 10% |
| Saturday | 83°F | Mostly Sunny | 5 to 9 mph SW | 9% |
| Saturday Night | 72°F | Partly Cloudy | 5 to 8 mph SW | 13% |
| Sunday | 83°F | Mostly Sunny | 5 to 10 mph SW | 11% |
| Sunday Night | 71°F | Partly Cloudy | 9 mph SW | 9% |
| Monday | 82°F | Mostly Sunny | 7 to 13 mph SW | 9% |
| Monday Night | 70°F | Partly Cloudy | 12 mph SW | 6% |
Forecast source: National Weather Service (api.weather.gov) for Harwich Center (41.692, -70.066). Updated through the day.
Growing snapshot for Harwich Center
Last spring frost
Apr 13
First fall frost
Nov 4
Growing season
206 days
Hardiness zone
7b
More local growing data for Harwich Center: nearby ZIP 02645 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 Harwich
East Sandwich
Falmouth
Forestdale
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 (3.7 mi from Harwich Center). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.