New Holland, PA 17506 Frost Dates
17506, near New Holland, 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.
Zone 7a (0 to 5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for New Holland, not a forecast for this year.
Stretching the season past the first frost
New Holland'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
04/16 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.
New Holland against the rest of the dataset
At roughly 193 frost-free days, New Holland places 19,836 of 40,283 ZIP codes in this dataset. Within PA, it ranks 424 of 2,088.
Learn more
Two guides worth reading on 17506: local microclimates, on what one yard in New Holland can differ from the 17506 normal, and zone vs. frost date, on why Zone 7a and New Holland's frost date answer different questions.