When to plant in Hammonton, NJ
USDA Zone 7aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Hammonton, New Jersey — all computed from Hammonton's nearest NOAA weather station.
Zone 7a means many perennials and even some tender shrubs overwinter in Hammonton, while your frost dates still decide when annuals go out.
The average first fall frost in Hammonton is now 5 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
HAMMONTON 1 NE · 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 Hammonton’s own odds, recorded at HAMMONTON 1 NE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 12 | Apr 27 | Apr 13 | Oct 5 | Oct 16 | Oct 31 |
| 32°F | Apr 27 | Apr 14 | Apr 1 | Oct 13 | Oct 27 | Nov 8 |
| 28°F | Apr 16 | Apr 2 | Mar 21 | Oct 24 | Nov 5 | Nov 19 |
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 Hammonton, 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.
Hammonton planting FAQ
When is the last spring frost in Hammonton, NJ?
On average, the last spring frost in Hammonton is around April 14 (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 Hammonton, NJ?
In Hammonton, the first 32°F freeze of fall lands around October 27 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Hammonton in?
Hammonton 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 Hammonton?
There are roughly 196 frost-free days in Hammonton (a moderate growing season), running from the average last frost around April 14 to the first fall frost near October 27.
When should I plant tomatoes in Hammonton?
In Hammonton, start tomato seeds indoors around February 17–March 3, then transplant seedlings outdoors around April 21 once the danger of frost has passed.
Never miss a window in Hammonton
An email when it’s time to start seeds, transplant, and sow — timed to Hammonton’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Williamstown · 17 km
- Sicklerville · 21 km
- Pine Hill · 23 km
- Lindenwold · 26 km
- McKee City · 26 km
- Echelon · 28 km
- Vineland · 29 km
- Springdale · 30 km
Frost dates recorded at HAMMONTON 1 NE, 4 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 Hammonton, NJ — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00283662. Retrieved from https://blissgarden.com/new-jersey/hammonton.