Dennis, MA Weather & Growing Conditions
Today
62°F
Mostly Sunny
Mostly sunny, with a high near 62. Northeast wind 5 to 13 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 62°F | Mostly Sunny | 5 to 13 mph NE | 0% |
| Tonight | 56°F | Partly Cloudy | 6 mph E | 0% |
| Sunday | 65°F | Mostly Cloudy then Rain Showers Likely | 6 to 9 mph SE | 72% |
| Sunday Night | 58°F | Rain Showers | 6 to 15 mph E | 83% |
| Monday | 65°F | Chance Rain Showers then Mostly Cloudy | 15 to 18 mph N | 41% |
| Monday Night | 56°F | Mostly Cloudy | 10 to 15 mph NE | 2% |
| Tuesday | 63°F | Mostly Cloudy | 17 mph NE | 7% |
| Tuesday Night | 57°F | Mostly Cloudy | 16 to 20 mph NE | 3% |
| Wednesday | 63°F | Partly Sunny | 20 to 24 mph NE | 4% |
| Wednesday Night | 57°F | Mostly Cloudy then Slight Chance Rain Showers | 22 to 25 mph NE | 24% |
| Thursday | 64°F | Chance Rain Showers | 25 to 29 mph NE | 35% |
| Thursday Night | 57°F | Chance Rain Showers | 24 to 29 mph NE | 43% |
| Friday | 64°F | Chance Rain Showers | 24 to 32 mph NE | 43% |
| Friday Night | 57°F | Chance Showers And Thunderstorms | 26 to 32 mph NE | 46% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Dennis, MA
Last spring frost
Apr 22
First fall frost
Oct 28
Growing season
188 days
Hardiness zone
7b
Explore more for Dennis, MA: full frost dates · planting calendar · Massachusetts frost dates
Climate data from the nearest NOAA station, Hyannis Barnstable Muni Ap, Ma (6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.