Southbridge Town, MA 01570 Frost Dates
When can you plant in Southbridge Town, MA?
Typically, the last spring freeze lands around 05/01, roughly 246 days out. The first fall frost typically arrives around 10/10, about 162 frost-free days later.
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.
What to do before the first frost
About 6 weeks of growing season left in Southbridge Town before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/01 isn't a guarantee
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/21 and you're betting against frost in roughly 9 years out of 10. 05/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Southbridge Town compares
At roughly 162 frost-free days, Southbridge Town places 31,650 of 40,283 ZIP codes in this dataset. Within MA, it ranks 473 of 712.
Learn more
local microclimates covers what one yard in Southbridge Town can differ from the 01570 normal. zone vs. frost date covers why Zone 6b and Southbridge Town's frost date answer different questions.