Pen Argyl, PA 18072 Frost Dates
Frost dates for Pen Argyl, PA, ZIP 18072
The last spring frost here typically falls around 04/18, about 233 days from today. The first fall frost typically arrives around 10/25, about 188 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 Pen Argyl, not a forecast for this year.
What to do before the first frost
Zone 6b around Pen Argyl 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.
Why 04/18 isn't a guarantee
04/18 is the middle of 30 years of NOAA records, not a promise. Plant by 04/05 and you're betting against frost in roughly 9 years out of 10. 05/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Pen Argyl compares
About 188 days separate Pen Argyl's last and first frost, putting it 22,043 of 40,283 ZIP codes nationally. Within PA, it ranks 584 of 2,088.
Learn more
the frost range explains how to read the range around Pen Argyl's dates instead of trusting one, and local microclimates explains what one yard in Pen Argyl can differ from the 18072 normal.