Gratz, PA 17867 Frost Dates
Frost dates for Gratz, PA, ZIP 17867
The last spring frost here typically falls around 04/30, about 245 days from today. The first fall frost typically arrives around 10/13, about 166 frost-free days later.
Gratz sits in USDA Zone 6b (-5 to 0°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 6b around Gratz has about 7 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.
How much risk comes with planting early here
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. 05/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Gratz compares
At roughly 166 frost-free days, Gratz places 30,422 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,534 of 2,088.
Learn more
the frost range explains how to read the range around Gratz's dates instead of trusting one, and local microclimates explains what one yard in Gratz can differ from the 17867 normal.