Siasconset, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Siasconset, a community in Nantucket County, Massachusetts.
Overnight
57°F
Mostly Cloudy
Mostly cloudy, with a low around 57. Northeast wind around 17 mph, with gusts as high as 29 mph.
7-day forecast for Siasconset
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Mostly Cloudy | 17 mph NE | 0% |
| Saturday | 64°F | Mostly Sunny | 9 to 16 mph NE | 0% |
| Saturday Night | 47°F | Partly Cloudy | 8 mph E | 0% |
| Sunday | 66°F | Mostly Cloudy then Chance Rain Showers | 9 to 13 mph SE | 50% |
| Sunday Night | 60°F | Rain Showers | 12 mph E | 87% |
| Monday | 65°F | Rain Showers | 13 to 18 mph NE | 79% |
| Monday Night | 57°F | Chance Rain Showers | 15 to 20 mph NE | 25% |
| Tuesday | 63°F | Chance Rain Showers | 22 mph NE | 25% |
| Tuesday Night | 56°F | Mostly Cloudy | 20 to 24 mph NE | 14% |
| Wednesday | 63°F | Partly Sunny then Slight Chance Rain Showers | 22 to 25 mph NE | 15% |
| Wednesday Night | 56°F | Chance Rain Showers | 24 to 29 mph NE | 29% |
| Thursday | 63°F | Chance Rain Showers | 22 to 29 mph NE | 31% |
| Thursday Night | 57°F | Chance Rain Showers | 22 to 25 mph NE | 42% |
| Friday | 64°F | Chance Rain Showers | 21 to 25 mph N | 41% |
Forecast source: National Weather Service (api.weather.gov) for Siasconset (41.265, -69.973). Updated through the day.
Growing snapshot for Siasconset
Last spring frost
Apr 13
First fall frost
Nov 8
Growing season
208 days
Hardiness zone
7b
More local growing data for Siasconset: nearby ZIP 02564 weather · frost dates · planting calendar · Massachusetts frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Nantucket Mem Ap, Ma (4.2 mi from Siasconset). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.