When to plant in Winthrop Town, MA
USDA Zone 7aEverything below — frost dates, hardiness zone, and what to plant when in Winthrop Town, Massachusetts — is derived from the closest NOAA station with complete climate normals.
Zone 7a means many perennials and even some tender shrubs overwinter in Winthrop Town, while your frost dates still decide when annuals go out.
Frost probability
BOSTON LOGAN INTL AP · 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 Winthrop Town’s own odds, recorded at BOSTON LOGAN INTL AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 1 | Apr 17 | Apr 6 | Oct 15 | Oct 29 | Nov 11 |
| 32°F | Apr 17 | Apr 4 | Mar 25 | Oct 29 | Nov 9 | Nov 22 |
| 28°F | Apr 6 | Mar 28 | Mar 15 | Nov 8 | Nov 21 | Dec 5 |
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 Winthrop Town, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 16 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.
Winthrop Town planting FAQ
When is the last spring frost in Winthrop Town, MA?
On average, the last spring frost in Winthrop Town is around April 4 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Winthrop Town, MA?
Expect Winthrop Town's first fall frost near November 9 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Winthrop Town in?
Winthrop Town 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 Winthrop Town?
There are roughly 219 frost-free days in Winthrop Town (a long growing season), running from the average last frost around April 4 to the first fall frost near November 9.
When should I plant tomatoes in Winthrop Town?
In Winthrop Town, start tomato seeds indoors around February 7–February 21, then transplant seedlings outdoors around April 11 once the danger of frost has passed.
Never miss a window in Winthrop Town
An email when it’s time to start seeds, transplant, and sow — timed to Winthrop Town’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at BOSTON LOGAN INTL AP, 4 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 Winthrop Town, MA — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00014739. Retrieved from https://blissgarden.com/massachusetts/winthrop-town.