South Yarmouth, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Yarmouth, a community in Barnstable County, Massachusetts.
Today
82°F
Mostly Sunny
Mostly sunny, with a high near 82. Southwest wind 3 to 8 mph.
7-day forecast for South Yarmouth
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Mostly Sunny | 3 to 8 mph SW | 0% |
| Tonight | 67°F | Mostly Cloudy then Slight Chance Rain Showers | 2 to 7 mph SW | 16% |
| Wednesday | 81°F | Slight Chance Rain Showers then Mostly Sunny | 2 to 9 mph NW | 17% |
| Wednesday Night | 70°F | Mostly Cloudy | 5 to 8 mph SW | 5% |
| Thursday | 84°F | Mostly Sunny | 5 to 12 mph SW | 4% |
| Thursday Night | 72°F | Partly Cloudy | 7 to 10 mph SW | 2% |
| Friday | 83°F | Mostly Sunny | 7 to 12 mph SW | 3% |
| Friday Night | 72°F | Partly Cloudy | 5 to 10 mph SW | 8% |
| Saturday | 82°F | Mostly Sunny | 5 to 9 mph SW | 9% |
| Saturday Night | 72°F | Partly Cloudy | 5 to 8 mph SW | 12% |
| Sunday | 82°F | Mostly Sunny | 5 to 10 mph SW | 11% |
| Sunday Night | 71°F | Partly Cloudy | 6 to 9 mph SW | 9% |
| Monday | 82°F | Mostly Sunny | 6 to 12 mph SW | 9% |
| Monday Night | 70°F | Partly Cloudy | 12 mph SW | 7% |
Forecast source: National Weather Service (api.weather.gov) for South Yarmouth (41.667, -70.201). Updated through the day.
Growing snapshot for South Yarmouth
Last spring frost
Apr 13
First fall frost
Nov 3
Growing season
204 days
Hardiness zone
7a
More local growing data for South Yarmouth: nearby ZIP 02664 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 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
Climate data from the nearest NOAA station, W Harwich, Ma (4.1 mi from South Yarmouth). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.