Penn Yan, NY 14418 Frost Dates
Penn Yan, NY: when does the frost end?
Typically, the last spring freeze lands around 04/30, roughly 245 days out. Fall's first freeze usually shows up around 10/22, roughly 173 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Penn Yan in Zone 6a (-10 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
With roughly 8 weeks until Penn Yan's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/14 and only about 1 year in 10 sees frost after that.
Penn Yan against the rest of the dataset
Penn Yan's growing season runs about 173 days, ranking 27,871 of 40,283 US ZIP codes measured here, longest to shortest. Within NY, it ranks 648 of 1,951.
Learn more
Before leaning on 14418's figures: the frost range explains how to read the range around Penn Yan's dates instead of trusting one, while local microclimates explains what one yard in Penn Yan can differ from the 14418 normal.