North York, PA 17333 Frost Dates
17333, near North York, PA: the frost window
The last spring frost here typically falls around 04/26, about 241 days from today. Fall's first freeze usually shows up around 10/19, roughly 177 days after the last spring frost.
Zone 6b (-5 to 0°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 North York, not a forecast for this year.
Stretching the season past the first frost
North York's growing season runs out in roughly 7 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
04/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/13 and only about 1 year in 10 sees frost after that.
North York against the rest of the dataset
At roughly 177 frost-free days, North York places 26,136 of 40,283 ZIP codes in this dataset. Within PA, it ranks 955 of 2,088.
Learn more
Two guides worth reading on 17333: local microclimates, on what one yard in North York can differ from the 17333 normal, and zone vs. frost date, on why Zone 6b and North York's frost date answer different questions.