Westfield, MA 01086 Frost Dates
Frost dates for Westfield, MA, ZIP 01086
The last spring frost here typically falls around 04/28, about 243 days from today. The first fall frost typically arrives around 10/17, about 171 frost-free days later.
Westfield sits in USDA Zone 6a (-10 to -5°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
Zone 6a around Westfield has about 7 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.
Why 04/28 isn't a guarantee
04/28 is the middle of 30 years of NOAA records, not a promise. Plant by 04/15 and you're betting against frost in roughly 9 years out of 10. 05/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Westfield compares
At roughly 171 frost-free days, Westfield places 28,587 of 40,283 ZIP codes in this dataset. Within MA, it ranks 321 of 712.
Learn more
local microclimates explains what one yard in Westfield can differ from the 01086 normal, and zone vs. frost date explains why Zone 6a and Westfield's frost date answer different questions.