Dobbs Ferry, NY 10522 Frost Dates
Frost dates for Dobbs Ferry, NY, ZIP 10522
Typically, the last spring freeze lands around 04/20, roughly 235 days out. The first fall frost typically arrives around 10/26, about 189 frost-free days later.
The USDA Plant Hardiness Zone Map puts Dobbs Ferry in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 7a around Dobbs Ferry has about 8 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 04/20 isn't a guarantee
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dobbs Ferry compares
At roughly 189 frost-free days, Dobbs Ferry places 21,465 of 40,283 ZIP codes in this dataset. Within NY, it ranks 389 of 1,951.
Learn more
local microclimates explains what one yard in Dobbs Ferry can differ from the 10522 normal, and zone vs. frost date explains why Zone 7a and Dobbs Ferry's frost date answer different questions.