Haverhill, MA 01831 Frost Dates
Frost dates for Haverhill, MA, ZIP 01831
The last spring frost here typically falls around 05/01, about 246 days from today. The first fall frost typically arrives around 10/12, about 163 frost-free days later.
The USDA Plant Hardiness Zone Map puts Haverhill in Zone 6b (-5 to 0°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 6b around Haverhill has about 6 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.
The actual range around Haverhill's last frost
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/20 and you're betting against frost in roughly 9 years out of 10. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Haverhill compares
Haverhill's growing season runs about 163 days, ranking 31,309 of 40,283 US ZIP codes measured here, longest to shortest. Within MA, it ranks 439 of 712.
Learn more
local microclimates explains what one yard in Haverhill can differ from the 01831 normal, and zone vs. frost date explains why Zone 6b and Haverhill's frost date answer different questions.