Siasconset, MA Weather & Growing Conditions
Today
69°F
Sunny
Sunny. High near 69, with temperatures falling to around 58 in the afternoon. Southwest wind 10 to 14 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Sunny | 10 to 14 mph SW | 3% |
| Tonight | 57°F | Partly Cloudy | 10 mph SW | 3% |
| Thursday | 64°F | Patchy Fog then Partly Sunny | 9 to 13 mph S | 2% |
| Thursday Night | 58°F | Patchy Fog then Chance Light Rain | 12 mph S | 54% |
| Friday | 64°F | Light Rain | 13 mph S | 87% |
| Friday Night | 56°F | Light Rain | 10 mph S | 94% |
| Saturday | 62°F | Light Rain | 12 mph S | 89% |
| Saturday Night | 49°F | Chance Light Rain | 9 to 13 mph W | 27% |
| Sunday | 57°F | Slight Chance Light Rain then Mostly Sunny | 12 to 15 mph W | 17% |
| Sunday Night | 47°F | Partly Cloudy | 9 to 13 mph W | 12% |
| Monday | 56°F | Chance Light Rain | 13 to 16 mph W | 34% |
| Monday Night | 45°F | Chance Light Rain then Partly Cloudy | 15 mph W | 28% |
| Tuesday | 57°F | Sunny | 16 mph W | 7% |
| Tuesday Night | 45°F | Partly Cloudy | 15 mph W | 6% |
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 (2.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.