Greenfield, MA 01376 Frost Dates
Frost dates for Greenfield, MA, ZIP 01376
Typically, the last spring freeze lands around 05/01, roughly 246 days out. The first fall frost typically arrives around 10/11, about 162 frost-free days later.
Greenfield sits in USDA Zone 6a (-10 to -5°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
Zone 6a around Greenfield has about 6 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 Greenfield's last frost
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/19 and you're betting against frost in roughly 9 years out of 10. 05/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Greenfield compares
About 162 days separate Greenfield's last and first frost, putting it 31,664 of 40,283 ZIP codes nationally. Within MA, it ranks 486 of 712.
Learn more
local microclimates explains what one yard in Greenfield can differ from the 01376 normal, and zone vs. frost date explains why Zone 6a and Greenfield's frost date answer different questions.