FrostDateCheck

Winthrop Town, MA 02201 Frost Dates

Winthrop Town, MA: when does the frost end?

Zone 7a

The last spring frost here typically falls around 04/04, about 219 days from today. Fall's first freeze usually shows up around 11/09, roughly 218 days after the last spring frost.

The USDA Plant Hardiness Zone Map puts Winthrop 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.

Stretching the season past the first frost

With roughly 10 weeks until Winthrop Town's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.

The actual range around Winthrop Town's last frost

04/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/17 and only about 1 year in 10 sees frost after that.

Winthrop Town against the rest of the dataset

Winthrop Town's growing season runs about 218 days, ranking 13,218 of 40,283 US ZIP codes measured here, longest to shortest. Within MA, it ranks 35 of 712.

Learn more

Before leaning on 02201's figures: the frost range explains how to read the range around Winthrop Town's dates instead of trusting one, while local microclimates explains what one yard in Winthrop Town can differ from the 02201 normal.