Quincy, MA 02171 Frost Dates
Frost dates for Quincy, MA, ZIP 02171
The last spring frost here typically falls around 04/04, about 219 days from today. The first fall frost typically arrives around 11/09, about 218 frost-free days later.
Quincy 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 Quincy 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 Quincy compares
Quincy's growing season runs about 218 days, ranking 13,171 of 40,283 US ZIP codes measured here, longest to shortest. Within MA, it ranks 12 of 712.
Learn more
local microclimates explains what one yard in Quincy can differ from the 02171 normal, and zone vs. frost date explains why Zone 7a and Quincy's frost date answer different questions.