Westfield, MA 06027 Frost Dates
When can you plant in Westfield, MA?
Around 04/30 is the usual last spring frost, about 245 days away. The first fall frost typically arrives around 10/17, about 168 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
About 7 weeks of growing season left in Westfield before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/30 isn't a guarantee
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 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 Westfield compares
At roughly 168 frost-free days, Westfield places 29,661 of 40,283 ZIP codes in this dataset. Within MA, it ranks 373 of 712.
Learn more
zone vs. frost date covers why Zone 6a and Westfield's frost date answer different questions. the frost range covers how to read the range around Westfield's dates instead of trusting one.