South Dennis, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Dennis, a community in Barnstable County, Massachusetts.
Today
67°F
Sunny
Sunny. High near 67, with temperatures falling to around 59 in the afternoon. Southwest wind around 12 mph.
7-day forecast for South Dennis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 67°F | Sunny | 12 mph SW | 3% |
| Tonight | 56°F | Partly Cloudy then Patchy Fog | 8 mph SW | 3% |
| Thursday | 68°F | Patchy Fog then Partly Sunny | 6 to 12 mph SW | 2% |
| Thursday Night | 58°F | Light Rain Likely | 9 mph SW | 59% |
| Friday | 66°F | Light Rain | 7 to 10 mph S | 93% |
| Friday Night | 55°F | Light Rain | 7 mph S | 96% |
| Saturday | 63°F | Light Rain | 9 mph SW | 88% |
| Saturday Night | 45°F | Slight Chance T-storms | 6 to 9 mph W | 22% |
| Sunday | 58°F | Slight Chance Light Rain then Mostly Sunny | 7 to 10 mph W | 18% |
| Sunday Night | 42°F | Partly Cloudy | 8 mph W | 10% |
| Monday | 56°F | Chance Light Rain | 8 to 13 mph W | 30% |
| Monday Night | 39°F | Slight Chance Light Rain then Partly Cloudy | 10 mph W | 24% |
| Tuesday | 57°F | Sunny | 10 to 14 mph W | 7% |
| Tuesday Night | 39°F | Mostly Clear | 10 mph W | 5% |
Forecast source: National Weather Service (api.weather.gov) for South Dennis (41.704, -70.151). Updated through the day.
Growing snapshot for South Dennis
Last spring frost
Apr 13
First fall frost
Nov 3
Growing season
204 days
Hardiness zone
7a
More local growing data for South Dennis: nearby ZIP 02660 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 (3.8 mi from South Dennis). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.