Siasconset, MA Weather & Growing Conditions
Today
63°F
Mostly Sunny
Mostly sunny, with a high near 63. Northeast wind 8 to 14 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 63°F | Mostly Sunny | 8 to 14 mph NE | 0% |
| Tonight | 55°F | Partly Cloudy | 8 mph E | 0% |
| Sunday | 66°F | Mostly Cloudy then Chance Rain Showers | 8 to 12 mph SE | 51% |
| Sunday Night | 58°F | Showers And Thunderstorms | 8 to 12 mph E | 86% |
| Monday | 65°F | Rain Showers Likely | 14 to 17 mph N | 56% |
| Monday Night | 56°F | Mostly Cloudy | 12 to 16 mph NE | 12% |
| Tuesday | 63°F | Mostly Cloudy | 17 mph NE | 8% |
| Tuesday Night | 54°F | Mostly Cloudy | 17 mph NE | 9% |
| Wednesday | 64°F | Partly Sunny | 20 mph NE | 10% |
| Wednesday Night | 55°F | Chance Rain Showers | 18 to 22 mph NE | 27% |
| Thursday | 64°F | Chance Rain Showers | 18 to 24 mph NE | 38% |
| Thursday Night | 55°F | Chance Rain Showers | 20 to 23 mph NE | 44% |
| Friday | 65°F | Chance Rain Showers | 20 to 24 mph NE | 44% |
| Friday Night | 55°F | Chance Rain Showers | 23 mph NE | 45% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Siasconset, MA
Last spring frost
Apr 13
First fall frost
Nov 8
Growing season
208 days
Hardiness zone
7b
Explore more for Siasconset, MA: full frost dates · planting calendar · Massachusetts frost dates
Climate data from the nearest NOAA station, Nantucket Mem Ap, Ma (4.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.