FrostDateCheck

Winthrop Town, MA 02112 Frost Dates

When can you plant in Winthrop Town, MA?

Zone 7a

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.

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

About 10 weeks of growing season left in Winthrop Town before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.

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

Winthrop Town's growing season runs about 218 days, ranking 13,211 of 40,283 US ZIP codes measured here, longest to shortest. Within MA, it ranks 28 of 712.

Learn more

the frost range covers how to read the range around Winthrop Town's dates instead of trusting one. local microclimates covers what one yard in Winthrop Town can differ from the 02112 normal.