Northport, NY 11740 Frost Dates
Frost dates for Northport, NY, ZIP 11740
Typically, the last spring freeze lands around 04/09, roughly 224 days out. The first fall frost typically arrives around 11/10, about 215 frost-free days later.
The USDA Plant Hardiness Zone Map puts Northport 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
Zone 7b around Northport has about 11 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.
The actual range around Northport's last frost
04/09 is the middle of 30 years of NOAA records, not a promise. Plant by 03/30 and you're betting against frost in roughly 9 years out of 10. 04/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Northport compares
About 215 days separate Northport's last and first frost, putting it 14,072 of 40,283 ZIP codes nationally. Within NY, it ranks 221 of 1,951.
Learn more
local microclimates explains what one yard in Northport can differ from the 11740 normal, and zone vs. frost date explains why Zone 7b and Northport's frost date answer different questions.