When to plant in Chestnut Ridge, NY
USDA Zone 7aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Chestnut Ridge, New York — all computed from Chestnut Ridge's nearest NOAA weather station.
Heads up: the nearest complete-normals station is about 20 km from Chestnut Ridge, so your yard's frost dates can differ — a low spot or a paved city center can shift them by a week. Zone 7a means many perennials and even some tender shrubs overwinter in Chestnut Ridge, while your frost dates still decide when annuals go out.
The average first fall frost in Chestnut Ridge is now 5 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
DOBBS FERRY-ARDSLEY · 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 Chestnut Ridge’s own odds, recorded at DOBBS FERRY-ARDSLEY.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 18 | May 2 | Apr 19 | Oct 1 | Oct 12 | Oct 31 |
| 32°F | May 6 | Apr 20 | Apr 4 | Oct 10 | Oct 26 | Nov 10 |
| 28°F | Apr 20 | Apr 4 | Mar 20 | Oct 23 | Nov 7 | Nov 23 |
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 Chestnut Ridge, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 26 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.
Chestnut Ridge planting FAQ
When is the last spring frost in Chestnut Ridge, NY?
Chestnut Ridge's average last spring frost falls near April 20 — 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 Chestnut Ridge, NY?
Expect Chestnut Ridge's first fall frost near October 26 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Chestnut Ridge in?
Chestnut Ridge 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 Chestnut Ridge?
There are roughly 189 frost-free days in Chestnut Ridge (a moderate growing season), running from the average last frost around April 20 to the first fall frost near October 26.
When should I plant tomatoes in Chestnut Ridge?
In Chestnut Ridge, start tomato seeds indoors around February 23–March 9, then transplant seedlings outdoors around April 27 once the danger of frost has passed.
Never miss a window in Chestnut Ridge
An email when it’s time to start seeds, transplant, and sow — timed to Chestnut Ridge’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Nanuet · 3 km
- Spring Valley · 3 km
- Monsey · 4 km
- Pearl River · 4 km
- Airmont · 4 km
- Suffern · 8 km
- Hillsdale · 9 km
- Ramsey · 9 km
Frost dates recorded at DOBBS FERRY-ARDSLEY, 20 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 Chestnut Ridge, NY — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00302129. Retrieved from https://blissgarden.com/new-york/chestnut-ridge.