When to plant in Mastic Beach, NY
USDA Zone 7aEverything below — frost dates, hardiness zone, and what to plant when in Mastic Beach, New York — is derived from the closest NOAA station with complete climate normals.
In zone 7a, Mastic Beach supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
SHIRLEY BROOKHAVEN 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 Mastic Beach’s own odds, recorded at SHIRLEY BROOKHAVEN AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 15 | Apr 30 | Apr 18 | Oct 4 | Oct 17 | Nov 1 |
| 32°F | May 1 | Apr 18 | Apr 4 | Oct 13 | Oct 28 | Nov 11 |
| 28°F | Apr 17 | Apr 3 | Mar 21 | Oct 24 | Nov 9 | Nov 25 |
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 Mastic Beach, 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.
Mastic Beach planting FAQ
When is the last spring frost in Mastic Beach, NY?
Plan for the last spring frost in Mastic Beach around April 18 (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 Mastic Beach, NY?
Expect Mastic Beach's first fall frost near October 28 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Mastic Beach in?
Mastic Beach 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 Mastic Beach?
Mastic Beach has about 193 frost-free days — a moderate growing season — between the average last spring frost (April 18) and first fall frost (October 28).
When should I plant tomatoes in Mastic Beach?
For Mastic Beach, sow tomatoes indoors about February 21–March 7 and move the seedlings out around April 25, after the last spring frost.
Never miss a window in Mastic Beach
An email when it’s time to start seeds, transplant, and sow — timed to Mastic Beach’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Shirley · 5 km
- Mastic · 5 km
- North Bellport · 9 km
- Manorville · 12 km
- East Patchogue · 12 km
- Medford · 14 km
- Patchogue · 15 km
- Ridge · 16 km
Frost dates recorded at SHIRLEY BROOKHAVEN AP, 7 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 Mastic Beach, NY — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00054790. Retrieved from https://blissgarden.com/new-york/mastic-beach.