Green Tree, PA 15257 Frost Dates
Green Tree, PA: when does the frost end?
Typically, the last spring freeze lands around 04/18, roughly 233 days out. Fall's first freeze usually shows up around 10/28, roughly 193 days after the last spring frost.
Green Tree sits in USDA Zone 7a (0 to 5°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 9 weeks until Green Tree's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/18 isn't a guarantee
04/18 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Green Tree against the rest of the dataset
Green Tree's growing season runs about 193 days, ranking 19,862 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 445 of 2,088.
Learn more
Before leaning on 15257's figures: zone vs. frost date explains why Zone 7a and Green Tree's frost date answer different questions, while the frost range explains how to read the range around Green Tree's dates instead of trusting one.