Youngsville, PA 16367 Frost Dates
16367, near Youngsville, PA: the frost window
Typically, the last spring freeze lands around 05/22, roughly 267 days out. Fall's first freeze usually shows up around 09/30, roughly 131 days after the last spring frost.
Zone 6a (-10 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 Youngsville, not a forecast for this year.
Stretching the season past the first frost
Youngsville's growing season runs out in roughly 5 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
05/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/05 and only about 1 year in 10 sees frost after that.
Youngsville against the rest of the dataset
Youngsville's growing season runs about 131 days, ranking 38,294 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 2,070 of 2,088.
Learn more
Two guides worth reading on 16367: zone vs. frost date, on why Zone 6a and Youngsville's frost date answer different questions, and the frost range, on how to read the range around Youngsville's dates instead of trusting one.