Greenfield, MA 05354 Frost Dates
Frost dates for Greenfield, MA, ZIP 05354
Around 05/01 is the usual last spring frost, about 246 days away. The first fall frost typically arrives around 10/11, about 162 frost-free days later.
The USDA Plant Hardiness Zone Map puts Greenfield in Zone 5b (-15 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 5b 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.
How much risk comes with planting early here
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
At roughly 162 frost-free days, Greenfield places 31,665 of 40,283 ZIP codes in this dataset. Within MA, it ranks 487 of 712.
Learn more
zone vs. frost date explains why Zone 5b and Greenfield's frost date answer different questions, and the frost range explains how to read the range around Greenfield's dates instead of trusting one.