When to plant in Middle Island, NY
USDA Zone 7aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Middle Island, New York — all computed from Middle Island's nearest NOAA weather station.
Zone 7a means many perennials and even some tender shrubs overwinter in Middle Island, while your frost dates still decide when annuals go out.
Frost probability
MT SINAI · 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 Middle Island’s own odds, recorded at MT SINAI.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 7 | Apr 20 | Apr 6 | Oct 10 | Oct 26 | Nov 10 |
| 32°F | Apr 19 | Apr 4 | Mar 23 | Oct 20 | Nov 7 | Nov 24 |
| 28°F | Apr 7 | Mar 27 | Mar 11 | Nov 2 | Nov 22 | Dec 9 |
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 Middle Island, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 10 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.
Middle Island planting FAQ
When is the last spring frost in Middle Island, NY?
Middle Island's average last spring frost falls near April 4 — 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 Middle Island, NY?
The first fall frost in Middle Island typically arrives around November 7 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Middle Island in?
Middle Island 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 Middle Island?
There are roughly 217 frost-free days in Middle Island (a long growing season), running from the average last frost around April 4 to the first fall frost near November 7.
When should I plant tomatoes in Middle Island?
In Middle Island, 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 Middle Island
An email when it’s time to start seeds, transplant, and sow — timed to Middle Island’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Coram · 5 km
- Rocky Point · 5 km
- Ridge · 6 km
- Miller Place · 7 km
- Mount Sinai · 8 km
- Selden · 8 km
- Medford · 8 km
- Terryville · 8 km
Frost dates recorded at MT SINAI, 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 Middle Island, NY — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00305606. Retrieved from https://blissgarden.com/new-york/middle-island.