Newburyport, MA 01951 Frost Dates
Newburyport, MA: when does the frost end?
Typically, the last spring freeze lands around 05/03, roughly 248 days out. Fall's first freeze usually shows up around 10/08, roughly 158 days after the last spring frost.
Zone 6b (-5 to 0°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 Newburyport, not a forecast for this year.
Stretching the season past the first frost
With roughly 6 weeks until Newburyport's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Newburyport's last frost
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/17 and only about 1 year in 10 sees frost after that.
Newburyport against the rest of the dataset
At roughly 158 frost-free days, Newburyport places 32,925 of 40,283 ZIP codes in this dataset. Within MA, it ranks 581 of 712.
Learn more
Before leaning on 01951's figures: zone vs. frost date explains why Zone 6b and Newburyport's frost date answer different questions, while the frost range explains how to read the range around Newburyport's dates instead of trusting one.