Fitchburg, MA 03071 Frost Dates
Fitchburg, MA: when does the frost end?
The last spring frost here typically falls around 05/10, about 255 days from today. Fall's first freeze usually shows up around 10/06, roughly 147 days after the last spring frost.
Fitchburg 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.
Stretching the season past the first frost
With roughly 6 weeks until Fitchburg's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/10 isn't a guarantee
05/10 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/26 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/27 and only about 1 year in 10 sees frost after that.
Fitchburg against the rest of the dataset
At roughly 147 frost-free days, Fitchburg places 35,852 of 40,283 ZIP codes in this dataset. Within MA, it ranks 678 of 712.
Learn more
Before leaning on 03071's figures: the frost range explains how to read the range around Fitchburg's dates instead of trusting one, while local microclimates explains what one yard in Fitchburg can differ from the 03071 normal.