Pittsfield, MA 01254 Frost Dates
Frost dates for Pittsfield, MA, ZIP 01254
Typically, the last spring freeze lands around 05/05, roughly 250 days out. The first fall frost typically arrives around 10/05, about 152 frost-free days later.
Pittsfield 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.
What to do before the first frost
Zone 5b around Pittsfield has about 5 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.
The actual range around Pittsfield's last frost
05/05 is the middle of 30 years of NOAA records, not a promise. Plant by 04/23 and you're betting against frost in roughly 9 years out of 10. 05/21 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Pittsfield compares
Pittsfield's growing season runs about 152 days, ranking 34,689 of 40,283 US ZIP codes measured here, longest to shortest. Within MA, it ranks 647 of 712.
Learn more
zone vs. frost date explains why Zone 5b and Pittsfield's frost date answer different questions, and the frost range explains how to read the range around Pittsfield's dates instead of trusting one.