Winthrop Town, MA 02217 Frost Dates
Frost dates for Winthrop Town, MA, ZIP 02217
Typically, the last spring freeze lands around 04/04, roughly 219 days out. The first fall frost typically arrives around 11/09, about 218 frost-free days later.
Winthrop Town sits in USDA Zone 7a (0 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 7a around Winthrop Town has about 10 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 04/04 isn't a guarantee
04/04 is the middle of 30 years of NOAA records, not a promise. Plant by 03/25 and you're betting against frost in roughly 9 years out of 10. 04/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Winthrop Town compares
About 218 days separate Winthrop Town's last and first frost, putting it 13,222 of 40,283 ZIP codes nationally. Within MA, it ranks 39 of 712.
Learn more
the frost range explains how to read the range around Winthrop Town's dates instead of trusting one, and local microclimates explains what one yard in Winthrop Town can differ from the 02217 normal.