Worcester, MA 01501 Frost Dates
Worcester, MA: when does the frost end?
Around 04/23 is the usual last spring frost, about 238 days away. Fall's first freeze usually shows up around 10/21, roughly 181 days after the last spring frost.
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.
Stretching the season past the first frost
With roughly 8 weeks until Worcester's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Worcester's last frost
04/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/11 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.
Worcester against the rest of the dataset
At roughly 181 frost-free days, Worcester places 24,374 of 40,283 ZIP codes in this dataset. Within MA, it ranks 199 of 712.
Learn more
Before leaning on 01501's figures: the frost range explains how to read the range around Worcester's dates instead of trusting one, while local microclimates explains what one yard in Worcester can differ from the 01501 normal.