Clymer, PA 15777 Frost Dates
Frost dates for Clymer, PA, ZIP 15777
The last spring frost here typically falls around 05/10, about 255 days from today. The first fall frost typically arrives around 10/12, about 155 frost-free days later.
Clymer sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 6a around Clymer has about 6 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 05/10 isn't a guarantee
05/10 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 and you're betting against frost in roughly 9 years out of 10. 05/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Clymer compares
At roughly 155 frost-free days, Clymer places 34,031 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,793 of 2,088.
Learn more
local microclimates explains what one yard in Clymer can differ from the 15777 normal, and zone vs. frost date explains why Zone 6a and Clymer's frost date answer different questions.