When to plant in Somerset, MA
USDA Zone 7aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Somerset, Massachusetts — all computed from Somerset's nearest NOAA weather station.
In zone 7a, Somerset supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
TIVERTON · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Somerset’s own odds, recorded at TIVERTON.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 7 | Apr 26 | Apr 15 | Oct 8 | Oct 21 | Nov 3 |
| 32°F | Apr 22 | Apr 11 | Apr 1 | Oct 20 | Nov 2 | Nov 15 |
| 28°F | Apr 11 | Mar 31 | Mar 19 | Nov 2 | Nov 13 | Nov 30 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Somerset, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 19 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Somerset planting FAQ
When is the last spring frost in Somerset, MA?
Somerset's average last spring frost falls near April 11 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Somerset, MA?
Expect Somerset's first fall frost near November 2 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Somerset in?
Somerset is in USDA hardiness zone 7a. In zone 7a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Somerset?
Somerset has about 205 frost-free days — a moderate growing season — between the average last spring frost (April 11) and first fall frost (November 2).
When should I plant tomatoes in Somerset?
For Somerset, sow tomatoes indoors about February 14–February 28 and move the seedlings out around April 18, after the last spring frost.
Never miss a window in Somerset
An email when it’s time to start seeds, transplant, and sow — timed to Somerset’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Fall River · 6 km
- East Providence · 18 km
- Taunton · 19 km
- New Bedford · 21 km
- Warwick · 22 km
- Pawtucket · 23 km
- Providence · 23 km
- Attleboro · 24 km
Frost dates recorded at TIVERTON, 13 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Somerset, MA — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00377581. Retrieved from https://blissgarden.com/massachusetts/somerset.