Greenfield, MA 01330 Frost Dates
When can you plant in Greenfield, MA?
The last spring frost here typically falls around 05/17, about 262 days from today. The first fall frost typically arrives around 10/01, about 136 frost-free days later.
Greenfield sits in USDA Zone 5b (-15 to -10°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 Greenfield before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/17 isn't a guarantee
05/17 is the middle of 30 years of NOAA records, not a promise. Plant by 05/02 and you're betting against frost in roughly 9 years out of 10. 05/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Greenfield compares
At roughly 136 frost-free days, Greenfield places 37,645 of 40,283 ZIP codes in this dataset. Within MA, it ranks 708 of 712.
Learn more
the frost range covers how to read the range around Greenfield's dates instead of trusting one. local microclimates covers what one yard in Greenfield can differ from the 01330 normal.