New Philadelphia, PA 17959 Frost Dates
Frost dates for New Philadelphia, PA, ZIP 17959
Typically, the last spring freeze lands around 04/30, roughly 245 days out. The first fall frost typically arrives around 10/22, about 175 frost-free days later.
Zone 6b (-5 to 0°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 New Philadelphia, not a forecast for this year.
What to do before the first frost
Zone 6b around New Philadelphia has about 8 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.
The actual range around New Philadelphia's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/15 and you're betting against frost in roughly 9 years out of 10. 05/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How New Philadelphia compares
At roughly 175 frost-free days, New Philadelphia places 27,078 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,213 of 2,088.
Learn more
zone vs. frost date explains why Zone 6b and New Philadelphia's frost date answer different questions, and the frost range explains how to read the range around New Philadelphia's dates instead of trusting one.