Green Tree, PA 15259 Frost Dates
15259, near Green Tree, PA: the frost window
Around 04/18 is the usual last spring frost, about 233 days away. Fall's first freeze usually shows up around 10/28, roughly 193 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Green Tree in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Green Tree's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
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 19,864 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 447 of 2,088.
Learn more
Two guides worth reading on 15259: zone vs. frost date, on why Zone 7a and Green Tree's frost date answer different questions, and the frost range, on how to read the range around Green Tree's dates instead of trusting one.