Quarryville, PA 17566 Frost Dates
When can you plant in Quarryville, PA?
The last spring frost here typically falls around 04/03, about 218 days from today. The first fall frost typically arrives around 11/06, about 217 frost-free days later.
Zone 7a (0 to 5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Quarryville, not a forecast for this year.
What to do before the first frost
About 10 weeks of growing season left in Quarryville before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/03 is the middle of 30 years of NOAA records, not a promise. Plant by 03/22 and you're betting against frost in roughly 9 years out of 10. 04/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Quarryville compares
About 217 days separate Quarryville's last and first frost, putting it 13,494 of 40,283 ZIP codes nationally. Within PA, it ranks 49 of 2,088.
Learn more
local microclimates covers what one yard in Quarryville can differ from the 17566 normal. zone vs. frost date covers why Zone 7a and Quarryville's frost date answer different questions.