When to plant in Fullerton, PA
USDA Zone 7aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Fullerton, Pennsylvania — all computed from Fullerton's nearest NOAA weather station.
Zone 7a means many perennials and even some tender shrubs overwinter in Fullerton, while your frost dates still decide when annuals go out.
The average first fall frost in Fullerton is now 8 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
ALLENTOWN 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 Fullerton’s own odds, recorded at ALLENTOWN INTL AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 18 | May 2 | Apr 19 | Sep 29 | Oct 12 | Oct 28 |
| 32°F | May 6 | Apr 20 | Apr 6 | Oct 8 | Oct 24 | Nov 6 |
| 28°F | Apr 18 | Apr 5 | Mar 23 | Oct 19 | Nov 4 | Nov 18 |
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 Fullerton, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 22 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.
Fullerton planting FAQ
When is the last spring frost in Fullerton, PA?
On average, the last spring frost in Fullerton is around April 20 (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 Fullerton, PA?
The first fall frost in Fullerton typically arrives around October 24 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Fullerton in?
Fullerton 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 Fullerton?
There are roughly 187 frost-free days in Fullerton (a moderate growing season), running from the average last frost around April 20 to the first fall frost near October 24.
When should I plant tomatoes in Fullerton?
In Fullerton, 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 Fullerton
An email when it’s time to start seeds, transplant, and sow — timed to Fullerton’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Allentown · 4 km
- Northampton · 6 km
- Bethlehem · 9 km
- Emmaus · 11 km
- Easton · 23 km
- Phillipsburg · 26 km
- Pottstown · 44 km
- Lansdale · 46 km
Frost dates recorded at ALLENTOWN INTL AP, 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 Fullerton, PA — Frost Dates & Zone 7a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00014737. Retrieved from https://blissgarden.com/pennsylvania/fullerton.