Greenfield, MA 01360 Frost Dates
01360, near Greenfield, MA: the frost window
The last spring frost here typically falls around 05/01, about 246 days from today. Fall's first freeze usually shows up around 10/11, roughly 162 days after the last spring frost.
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.
Stretching the season past the first frost
Greenfield's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
05/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Greenfield against the rest of the dataset
At roughly 162 frost-free days, Greenfield places 31,662 of 40,283 ZIP codes in this dataset. Within MA, it ranks 484 of 712.
Learn more
Two guides worth reading on 01360: local microclimates, on what one yard in Greenfield can differ from the 01360 normal, and zone vs. frost date, on why Zone 5b and Greenfield's frost date answer different questions.