Greenport, NY 11939 Frost Dates
When can you plant in Greenport, NY?
Around 04/06 is the usual last spring frost, about 221 days away. The first fall frost typically arrives around 11/17, about 221 frost-free days later.
The USDA Plant Hardiness Zone Map puts Greenport in Zone 7b (5 to 10°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
About 12 weeks of growing season left in Greenport before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/06 isn't a guarantee
04/06 is the middle of 30 years of NOAA records, not a promise. Plant by 03/25 and you're betting against frost in roughly 9 years out of 10. 05/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Greenport compares
About 221 days separate Greenport's last and first frost, putting it 12,520 of 40,283 ZIP codes nationally. Within NY, it ranks 201 of 1,951.
Learn more
the frost range covers how to read the range around Greenport's dates instead of trusting one. local microclimates covers what one yard in Greenport can differ from the 11939 normal.