Dennis Port, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dennis Port, a community in Barnstable County, Massachusetts.
Today
80°F
Mostly Sunny
Mostly sunny, with a high near 80. Southwest wind 3 to 9 mph.
7-day forecast for Dennis Port
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Mostly Sunny | 3 to 9 mph SW | 0% |
| Tonight | 68°F | Mostly Cloudy then Slight Chance Rain Showers | 2 to 8 mph S | 16% |
| Wednesday | 80°F | Slight Chance Rain Showers then Mostly Sunny | 2 to 9 mph W | 18% |
| Wednesday Night | 70°F | Mostly Cloudy | 6 to 9 mph SW | 4% |
| Thursday | 82°F | Mostly Sunny | 6 to 12 mph SW | 4% |
| Thursday Night | 72°F | Partly Cloudy | 10 mph SW | 2% |
| Friday | 82°F | Mostly Sunny | 8 to 13 mph SW | 3% |
| Friday Night | 72°F | Partly Cloudy | 6 to 12 mph SW | 9% |
| Saturday | 81°F | Mostly Sunny | 6 to 10 mph SW | 8% |
| Saturday Night | 72°F | Partly Cloudy | 5 to 9 mph SW | 12% |
| Sunday | 81°F | Mostly Sunny | 5 to 12 mph SW | 11% |
| Sunday Night | 71°F | Partly Cloudy | 7 to 12 mph SW | 9% |
| Monday | 81°F | Mostly Sunny | 7 to 13 mph SW | 9% |
| Monday Night | 70°F | Partly Cloudy | 13 mph SW | 6% |
Forecast source: National Weather Service (api.weather.gov) for Dennis Port (41.668, -70.137). Updated through the day.
Growing snapshot for Dennis Port
Last spring frost
Apr 13
First fall frost
Nov 3
Growing season
204 days
Hardiness zone
7b
More local growing data for Dennis Port: nearby ZIP 02639 weather · frost dates · planting calendar · Massachusetts frost dates
Nearby towns & communities
Barnstable Town
Bourne
Brewster
Buzzards Bay
Chatham
Dennis
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
Seconsett Island
Climate data from the nearest NOAA station, W Harwich, Ma (1.1 mi from Dennis Port). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.