Southbridge Town, MA 06279 Frost Dates
06279, near Southbridge Town, MA: the frost window
Typically, the last spring freeze lands around 04/19, roughly 234 days out. Fall's first freeze usually shows up around 10/22, roughly 186 days after the last spring frost.
Southbridge Town 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
Southbridge 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
04/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/03 and only about 1 year in 10 sees frost after that.
Southbridge Town against the rest of the dataset
Southbridge Town's growing season runs about 186 days, ranking 22,742 of 40,283 US ZIP codes measured here, longest to shortest. Within MA, it ranks 163 of 712.
Learn more
Two guides worth reading on 06279: local microclimates, on what one yard in Southbridge Town can differ from the 06279 normal, and zone vs. frost date, on why Zone 6b and Southbridge Town's frost date answer different questions.