Troy, PA 16947 Frost Dates
When can you plant in Troy, PA?
The last spring frost here typically falls around 05/02, about 247 days from today. The first fall frost typically arrives around 10/15, about 165 frost-free days later.
Zone 6a (-10 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 Troy, not a forecast for this year.
What to do before the first frost
About 7 weeks of growing season left in Troy before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/02 isn't a guarantee
05/02 is the middle of 30 years of NOAA records, not a promise. Plant by 04/20 and you're betting against frost in roughly 9 years out of 10. 05/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Troy compares
At roughly 165 frost-free days, Troy places 30,637 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,543 of 2,088.
Learn more
local microclimates covers what one yard in Troy can differ from the 16947 normal. zone vs. frost date covers why Zone 6a and Troy's frost date answer different questions.