Youngsville, PA 16368 Frost Dates
Frost dates for Youngsville, PA, ZIP 16368
Typically, the last spring freeze lands around 05/22, roughly 267 days out. The first fall frost typically arrives around 09/30, about 131 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 Youngsville, not a forecast for this year.
What to do before the first frost
Zone 6a around Youngsville has about 5 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 05/22 isn't a guarantee
05/22 is the middle of 30 years of NOAA records, not a promise. Plant by 05/06 and you're betting against frost in roughly 9 years out of 10. 06/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Youngsville compares
About 131 days separate Youngsville's last and first frost, putting it 38,295 of 40,283 ZIP codes nationally. Within PA, it ranks 2,071 of 2,088.
Learn more
local microclimates explains what one yard in Youngsville can differ from the 16368 normal, and zone vs. frost date explains why Zone 6a and Youngsville's frost date answer different questions.