Siasconset, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Siasconset, a community in Nantucket County, Massachusetts.
This Afternoon
60°F
Partly Sunny
Partly sunny. High near 60, with temperatures falling to around 54 in the afternoon. Southwest wind around 13 mph.
7-day forecast for Siasconset
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 60°F | Partly Sunny | 13 mph SW | 1% |
| Tonight | 54°F | Mostly Cloudy | 10 mph SW | 5% |
| Wednesday | 61°F | Mostly Sunny | 13 mph SW | 6% |
| Wednesday Night | 56°F | Patchy Fog then Partly Cloudy | 10 mph SW | 3% |
| Thursday | 63°F | Partly Sunny | 10 to 14 mph SW | 5% |
| Thursday Night | 59°F | Mostly Cloudy then Chance Light Rain | 13 mph SW | 45% |
| Friday | 63°F | Light Rain | 15 mph S | 76% |
| Friday Night | 56°F | Rain | 13 mph S | 87% |
| Saturday | 61°F | Light Rain | 10 to 15 mph SW | 85% |
| Saturday Night | 50°F | Light Rain Likely | 9 to 13 mph W | 58% |
| Sunday | 57°F | Chance Light Rain | 14 mph W | 33% |
| Sunday Night | 49°F | Partly Cloudy | 12 to 15 mph W | 12% |
| Monday | 56°F | Chance Light Rain | 15 to 20 mph NW | 37% |
| Monday Night | 47°F | Chance Light Rain | 21 mph NW | 37% |
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 Nov 3, 2026.