Worcester, MA 01607 Frost Dates
Frost dates for Worcester, MA, ZIP 01607
The last spring frost here typically falls around 04/23, about 238 days from today. The first fall frost typically arrives around 10/21, about 181 frost-free days later.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Worcester, not a forecast for this year.
What to do before the first frost
Zone 6a around Worcester has about 8 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.
How much risk comes with planting early here
04/23 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 and you're betting against frost in roughly 9 years out of 10. 05/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Worcester compares
About 181 days separate Worcester's last and first frost, putting it 24,398 of 40,283 ZIP codes nationally. Within MA, it ranks 223 of 712.
Learn more
local microclimates explains what one yard in Worcester can differ from the 01607 normal, and zone vs. frost date explains why Zone 6a and Worcester's frost date answer different questions.