Westfield, MA 01085 Frost Dates
01085, near Westfield, MA: the frost window
The last spring frost here typically falls around 05/03, about 248 days from today. Fall's first freeze usually shows up around 10/08, roughly 158 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Westfield in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Westfield'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.
The actual range around Westfield's last frost
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/17 and only about 1 year in 10 sees frost after that.
Westfield against the rest of the dataset
Westfield's growing season runs about 158 days, ranking 32,892 of 40,283 US ZIP codes measured here, longest to shortest. Within MA, it ranks 571 of 712.
Learn more
Two guides worth reading on 01085: local microclimates, on what one yard in Westfield can differ from the 01085 normal, and zone vs. frost date, on why Zone 6a and Westfield's frost date answer different questions.