Newburyport, MA 01922 Frost Dates
01922, near Newburyport, MA: the frost window
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.
The USDA Plant Hardiness Zone Map puts Newburyport in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Newburyport's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
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
Newburyport's growing season runs about 158 days, ranking 32,923 of 40,283 US ZIP codes measured here, longest to shortest. Within MA, it ranks 579 of 712.
Learn more
Two guides worth reading on 01922: local microclimates, on what one yard in Newburyport can differ from the 01922 normal, and zone vs. frost date, on why Zone 6b and Newburyport's frost date answer different questions.