When to plant in Jamestown, NY
USDA Zone 6aJamestown, 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 6a, Jamestown gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
The average first fall frost in Jamestown is now 9 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
JAMESTOWN 4 ENE · 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 Jamestown’s own odds, recorded at JAMESTOWN 4 ENE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Jun 2 | May 20 | May 4 | Sep 19 | Oct 1 | Oct 14 |
| 32°F | May 25 | May 8 | Apr 22 | Oct 1 | Oct 13 | Oct 30 |
| 28°F | May 13 | Apr 25 | Apr 9 | Oct 10 | Oct 28 | Nov 12 |
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 Jamestown, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 29 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.
Jamestown planting FAQ
When is the last spring frost in Jamestown, NY?
Jamestown's average last spring frost falls near May 8 — 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 Jamestown, NY?
Expect Jamestown's first fall frost near October 13 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Jamestown in?
Jamestown is in USDA hardiness zone 6a. In zone 6a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Jamestown?
Jamestown has about 158 frost-free days — a moderate growing season — between the average last spring frost (May 8) and first fall frost (October 13).
When should I plant tomatoes in Jamestown?
For Jamestown, sow tomatoes indoors about March 13–March 27 and move the seedlings out around May 15, after the last spring frost.
Never miss a window in Jamestown
An email when it’s time to start seeds, transplant, and sow — timed to Jamestown’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Dunkirk · 43 km
- Olean · 66 km
- Erie · 69 km
- Lackawanna · 87 km
- Meadville · 91 km
- West Seneca · 91 km
- St. Marys · 93 km
- Buffalo · 94 km
Frost dates recorded at JAMESTOWN 4 ENE, 6 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 Jamestown, NY — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00304207. Retrieved from https://blissgarden.com/new-york/jamestown.