Amesbury, MA 03804 Frost Dates
03804, near Amesbury, MA: the frost window
Around 05/07 is the usual last spring frost, about 252 days away. Fall's first freeze usually shows up around 10/04, roughly 148 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Amesbury in Zone 6a (-10 to -5°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
Amesbury's growing season runs out in roughly 5 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 Amesbury's last frost
05/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/21 and only about 1 year in 10 sees frost after that.
Amesbury against the rest of the dataset
About 148 days separate Amesbury's last and first frost, putting it 35,678 of 40,283 ZIP codes nationally. Within MA, it ranks 662 of 712.
Learn more
Two guides worth reading on 03804: the frost range, on how to read the range around Amesbury's dates instead of trusting one, and local microclimates, on what one yard in Amesbury can differ from the 03804 normal.