Portage, PA 15946 Frost Dates
Frost dates for Portage, PA, ZIP 15946
The last spring frost here typically falls around 04/29, about 244 days from today. The first fall frost typically arrives around 10/21, about 176 frost-free days later.
The USDA Plant Hardiness Zone Map puts Portage in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 6a around Portage 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 Portage's last frost
04/29 is the middle of 30 years of NOAA records, not a promise. Plant by 04/14 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Portage compares
At roughly 176 frost-free days, Portage places 26,482 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,045 of 2,088.
Learn more
the frost range explains how to read the range around Portage's dates instead of trusting one, and local microclimates explains what one yard in Portage can differ from the 15946 normal.