When to plant in Lynn, MA
USDA Zone 7aLynn, Massachusetts frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
In zone 7a, Lynn supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
The average last spring frost in Lynn is now 8 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
MARBLEHEAD · 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 Lynn’s own odds, recorded at MARBLEHEAD.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 26 | May 9 | Apr 26 | Sep 28 | Oct 9 | Oct 23 |
| 32°F | May 13 | Apr 25 | Apr 12 | Oct 5 | Oct 20 | Nov 3 |
| 28°F | Apr 27 | Apr 11 | Apr 1 | Oct 17 | Oct 31 | Nov 15 |
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 Lynn, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 13 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.
Lynn planting FAQ
When is the last spring frost in Lynn, MA?
Plan for the last spring frost in Lynn around April 25 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Lynn, MA?
The first fall frost in Lynn typically arrives around October 20 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Lynn in?
Lynn 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 Lynn?
Lynn has about 178 frost-free days — a moderate growing season — between the average last spring frost (April 25) and first fall frost (October 20).
When should I plant tomatoes in Lynn?
For Lynn, sow tomatoes indoors about February 28–March 14 and move the seedlings out around May 2, after the last spring frost.
Never miss a window in Lynn
An email when it’s time to start seeds, transplant, and sow — timed to Lynn’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at MARBLEHEAD, 9 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 Lynn, MA — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00194502. Retrieved from https://blissgarden.com/massachusetts/lynn.