Bridgewater Town, MA 02331 Frost Dates
Frost dates for Bridgewater Town, MA, ZIP 02331
Typically, the last spring freeze lands around 04/15, roughly 230 days out. The first fall frost typically arrives around 11/01, about 198 frost-free days later.
The USDA Plant Hardiness Zone Map puts Bridgewater Town in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 7a around Bridgewater Town has about 9 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 04/15 isn't a guarantee
04/15 is the middle of 30 years of NOAA records, not a promise. Plant by 04/02 and you're betting against frost in roughly 9 years out of 10. 04/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bridgewater Town compares
Bridgewater Town's growing season runs about 198 days, ranking 18,301 of 40,283 US ZIP codes measured here, longest to shortest. Within MA, it ranks 117 of 712.
Learn more
the frost range explains how to read the range around Bridgewater Town's dates instead of trusting one, and local microclimates explains what one yard in Bridgewater Town can differ from the 02331 normal.