Terre Hill, PA 17507 Frost Dates
17507, near Terre Hill, PA: the frost window
Around 04/16 is the usual last spring frost, about 231 days away. Fall's first freeze usually shows up around 10/27, roughly 193 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Terre Hill 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
Terre Hill'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.
Why 04/16 isn't a guarantee
04/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/03 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/30 and only about 1 year in 10 sees frost after that.
Terre Hill against the rest of the dataset
At roughly 193 frost-free days, Terre Hill places 19,985 of 40,283 ZIP codes in this dataset. Within PA, it ranks 491 of 2,088.
Learn more
Two guides worth reading on 17507: local microclimates, on what one yard in Terre Hill can differ from the 17507 normal, and zone vs. frost date, on why Zone 7a and Terre Hill's frost date answer different questions.