Siasconset, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Siasconset, a community in Nantucket County, Massachusetts.
Today
76°F
Partly Sunny
Partly sunny, with a high near 76. West wind 5 to 8 mph.
7-day forecast for Siasconset
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Partly Sunny | 5 to 8 mph W | 0% |
| Tonight | 68°F | Mostly Cloudy then Slight Chance Rain Showers | 3 to 7 mph SE | 22% |
| Wednesday | 77°F | Slight Chance Rain Showers then Partly Sunny | 3 to 9 mph SW | 24% |
| Wednesday Night | 69°F | Patchy Fog then Mostly Cloudy | 9 mph SW | 5% |
| Thursday | 78°F | Mostly Sunny | 8 to 13 mph SW | 5% |
| Thursday Night | 69°F | Partly Cloudy | 13 mph SW | 1% |
| Friday | 78°F | Mostly Sunny | 15 mph SW | 1% |
| Friday Night | 69°F | Partly Cloudy | 12 to 15 mph SW | 12% |
| Saturday | 79°F | Mostly Sunny | 10 to 14 mph SW | 8% |
| Saturday Night | 69°F | Partly Cloudy then Slight Chance Rain Showers | 9 to 14 mph SW | 16% |
| Sunday | 78°F | Slight Chance Rain Showers | 9 to 15 mph SW | 16% |
| Sunday Night | 69°F | Partly Cloudy | 12 to 15 mph SW | 14% |
| Monday | 78°F | Mostly Sunny | 12 to 16 mph SW | 13% |
| Monday Night | 69°F | Partly Cloudy | 16 mph SW | 2% |
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 Aug 4, 2026.