When to plant in DeWitt, NY
USDA Zone 6aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for DeWitt, New York — all computed from DeWitt's nearest NOAA weather station.
In zone 6a, DeWitt gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
The average first fall frost in DeWitt is now 5 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
SYRACUSE HANCOCK INTL AP · 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 DeWitt’s own odds, recorded at SYRACUSE HANCOCK INTL AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 23 | May 8 | Apr 26 | Sep 24 | Oct 5 | Oct 21 |
| 32°F | May 13 | Apr 29 | Apr 16 | Oct 2 | Oct 19 | Nov 4 |
| 28°F | Apr 30 | Apr 16 | Apr 4 | Oct 16 | Nov 2 | Nov 16 |
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 DeWitt, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 30 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.
DeWitt planting FAQ
When is the last spring frost in DeWitt, NY?
On average, the last spring frost in DeWitt is around April 29 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in DeWitt, NY?
The first fall frost in DeWitt typically arrives around October 19 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is DeWitt in?
DeWitt 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 DeWitt?
DeWitt has about 173 frost-free days — a moderate growing season — between the average last spring frost (April 29) and first fall frost (October 19).
When should I plant tomatoes in DeWitt?
For DeWitt, sow tomatoes indoors about March 4–March 18 and move the seedlings out around May 6, after the last spring frost.
Never miss a window in DeWitt
An email when it’s time to start seeds, transplant, and sow — timed to DeWitt’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reachFrost dates recorded at SYRACUSE HANCOCK INTL AP, 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 DeWitt, NY — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00014771. Retrieved from https://blissgarden.com/new-york/dewitt.