Brockton, MA 02302 Frost Dates
02302, near Brockton, MA: the frost window
Typically, the last spring freeze lands around 04/22, roughly 237 days out. Fall's first freeze usually shows up around 10/19, roughly 178 days after the last spring frost.
Brockton sits in USDA Zone 6b (-5 to 0°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.
Stretching the season past the first frost
Brockton's growing season runs out in roughly 7 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
04/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/08 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/05 and only about 1 year in 10 sees frost after that.
Brockton against the rest of the dataset
About 178 days separate Brockton's last and first frost, putting it 25,553 of 40,283 ZIP codes nationally. Within MA, it ranks 253 of 712.
Learn more
Two guides worth reading on 02302: the frost range, on how to read the range around Brockton's dates instead of trusting one, and local microclimates, on what one yard in Brockton can differ from the 02302 normal.