When to plant in Mount Vernon, NY
USDA Zone 7bMount Vernon, New York frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
In zone 7b, Mount Vernon supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
BRONX · 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 Mount Vernon’s own odds, recorded at BRONX.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 26 | Apr 11 | Apr 1 | Oct 21 | Nov 4 | Nov 20 |
| 32°F | Apr 12 | Apr 1 | Mar 19 | Nov 2 | Nov 16 | Dec 4 |
| 28°F | Apr 3 | Mar 23 | Mar 8 | Nov 13 | Nov 30 | Dec 17 |
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 Mount Vernon, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 15 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.
Mount Vernon planting FAQ
When is the last spring frost in Mount Vernon, NY?
Mount Vernon's average last spring frost falls near April 1 — 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 Mount Vernon, NY?
Expect Mount Vernon's first fall frost near November 16 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Mount Vernon in?
Mount Vernon is in USDA hardiness zone 7b. In zone 7b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Mount Vernon?
Mount Vernon has about 229 frost-free days — a long growing season — between the average last spring frost (April 1) and first fall frost (November 16).
When should I plant tomatoes in Mount Vernon?
For Mount Vernon, sow tomatoes indoors about February 4–February 18 and move the seedlings out around April 8, after the last spring frost.
Never miss a window in Mount Vernon
An email when it’s time to start seeds, transplant, and sow — timed to Mount Vernon’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- New Rochelle · 4 km
- Yonkers · 5 km
- Eastchester · 5 km
- Mamaroneck · 9 km
- Scarsdale · 10 km
- Tenafly · 10 km
- Dobbs Ferry · 11 km
- Englewood · 12 km
Frost dates recorded at BRONX, 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 Mount Vernon, NY — Frost Dates & Zone 7b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00300961. Retrieved from https://blissgarden.com/new-york/mount-vernon.