Weymouth Town, MA 02189 Frost Dates
02189, near Weymouth Town, MA: the frost window
Typically, the last spring freeze lands around 04/25, roughly 240 days out. Fall's first freeze usually shows up around 10/22, roughly 177 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Weymouth 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
Weymouth Town's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/08 and only about 1 year in 10 sees frost after that.
Weymouth Town against the rest of the dataset
At roughly 177 frost-free days, Weymouth Town places 25,988 of 40,283 ZIP codes in this dataset. Within MA, it ranks 272 of 712.
Learn more
Two guides worth reading on 02189: local microclimates, on what one yard in Weymouth Town can differ from the 02189 normal, and zone vs. frost date, on why Zone 7a and Weymouth Town's frost date answer different questions.