Westfield, MA 01034 Frost Dates
01034, near Westfield, MA: the frost window
Typically, the last spring freeze lands around 04/28, roughly 243 days out. Fall's first freeze usually shows up around 10/17, roughly 171 days after the last spring frost.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Westfield, not a forecast for this year.
Stretching the season past the first frost
Westfield's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Westfield's last frost
04/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/11 and only about 1 year in 10 sees frost after that.
Westfield against the rest of the dataset
At roughly 171 frost-free days, Westfield places 28,584 of 40,283 ZIP codes in this dataset. Within MA, it ranks 318 of 712.
Learn more
Two guides worth reading on 01034: local microclimates, on what one yard in Westfield can differ from the 01034 normal, and zone vs. frost date, on why Zone 6a and Westfield's frost date answer different questions.