Port Leyden, NY 13420 Frost Dates
When can you plant in Port Leyden, NY?
Typically, the last spring freeze lands around 05/18, roughly 263 days out. The first fall frost typically arrives around 09/30, about 134 frost-free days later.
Port Leyden sits in USDA Zone 4a (-30 to -25°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 5 weeks of growing season left in Port Leyden before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
05/18 is the middle of 30 years of NOAA records, not a promise. Plant by 05/01 and you're betting against frost in roughly 9 years out of 10. 06/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Port Leyden compares
At roughly 134 frost-free days, Port Leyden places 38,007 of 40,283 ZIP codes in this dataset. Within NY, it ranks 1,871 of 1,951.
Learn more
local microclimates covers what one yard in Port Leyden can differ from the 13420 normal. zone vs. frost date covers why Zone 4a and Port Leyden's frost date answer different questions.