Amesbury, MA 03827 Frost Dates
Frost dates for Amesbury, MA, ZIP 03827
Around 05/07 is the usual last spring frost, about 252 days away. The first fall frost typically arrives around 10/04, about 148 frost-free days later.
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.
What to do before the first frost
Zone 6a around Amesbury has about 5 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
05/07 is the middle of 30 years of NOAA records, not a promise. Plant by 04/25 and you're betting against frost in roughly 9 years out of 10. 05/21 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Amesbury compares
Amesbury's growing season runs about 148 days, ranking 35,679 of 40,283 US ZIP codes measured here, longest to shortest. Within MA, it ranks 663 of 712.
Learn more
local microclimates explains what one yard in Amesbury can differ from the 03827 normal, and zone vs. frost date explains why Zone 6a and Amesbury's frost date answer different questions.