Gratz, PA 17048 Frost Dates
Gratz, PA: when does the frost end?
Around 04/27 is the usual last spring frost, about 242 days away. Fall's first freeze usually shows up around 10/16, roughly 172 days after the last spring frost.
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.
Stretching the season past the first frost
With roughly 7 weeks until Gratz's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/12 and only about 1 year in 10 sees frost after that.
Gratz against the rest of the dataset
At roughly 172 frost-free days, Gratz places 28,420 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,397 of 2,088.
Learn more
Before leaning on 17048's figures: the frost range explains how to read the range around Gratz's dates instead of trusting one, while local microclimates explains what one yard in Gratz can differ from the 17048 normal.