Southbridge Town, MA 01518 Frost Dates
Frost dates for Southbridge Town, MA, ZIP 01518
The last spring frost here typically falls around 04/28, about 243 days from today. The first fall frost typically arrives around 10/15, about 169 frost-free days later.
Southbridge Town sits in USDA Zone 6a (-10 to -5°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
Zone 6a around Southbridge Town has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Southbridge Town's last frost
04/28 is the middle of 30 years of NOAA records, not a promise. Plant by 04/14 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Southbridge Town compares
At roughly 169 frost-free days, Southbridge Town places 29,349 of 40,283 ZIP codes in this dataset. Within MA, it ranks 361 of 712.
Learn more
local microclimates explains what one yard in Southbridge Town can differ from the 01518 normal, and zone vs. frost date explains why Zone 6a and Southbridge Town's frost date answer different questions.