When to plant in Jefferson Valley-Yorktown, NY
USDA Zone 6bEverything below — frost dates, hardiness zone, and what to plant when in Jefferson Valley-Yorktown, New York — is derived from the closest NOAA station with complete climate normals.
Zone 6b means Jefferson Valley-Yorktown sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
SHRUB OAK · 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 Jefferson Valley-Yorktown’s own odds, recorded at SHRUB OAK.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 26 | May 10 | Apr 27 | Sep 25 | Oct 7 | Oct 22 |
| 32°F | May 13 | Apr 30 | Apr 16 | Oct 4 | Oct 17 | Nov 3 |
| 28°F | May 1 | Apr 17 | Apr 3 | Oct 16 | Oct 30 | Nov 13 |
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 Jefferson Valley-Yorktown, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 16 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.
Jefferson Valley-Yorktown planting FAQ
When is the last spring frost in Jefferson Valley-Yorktown, NY?
Jefferson Valley-Yorktown's average last spring frost falls near April 30 — 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 Jefferson Valley-Yorktown, NY?
In Jefferson Valley-Yorktown, the first 32°F freeze of fall lands around October 17 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Jefferson Valley-Yorktown in?
Jefferson Valley-Yorktown is in USDA hardiness zone 6b. In zone 6b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Jefferson Valley-Yorktown?
There are roughly 170 frost-free days in Jefferson Valley-Yorktown (a moderate growing season), running from the average last frost around April 30 to the first fall frost near October 17.
When should I plant tomatoes in Jefferson Valley-Yorktown?
In Jefferson Valley-Yorktown, start tomato seeds indoors around March 5–March 19, then transplant seedlings outdoors around May 7 once the danger of frost has passed.
Never miss a window in Jefferson Valley-Yorktown
An email when it’s time to start seeds, transplant, and sow — timed to Jefferson Valley-Yorktown’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Peekskill · 11 km
- Mount Kisco · 14 km
- Stony Point · 19 km
- Ossining · 19 km
- Haverstraw · 20 km
- West Haverstraw · 20 km
- New City · 24 km
- Beacon · 25 km
Frost dates recorded at SHRUB OAK, 3 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 Jefferson Valley-Yorktown, NY — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00307742. Retrieved from https://blissgarden.com/new-york/jefferson-valley-yorktown.