Haverhill, MA 03873 Frost Dates
Frost dates for Haverhill, MA, ZIP 03873
The last spring frost here typically falls around 04/30, about 245 days from today. The first fall frost typically arrives around 10/11, about 162 frost-free days later.
The USDA Plant Hardiness Zone Map puts Haverhill 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 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.
How much risk comes with planting early here
04/30 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
At roughly 162 frost-free days, Haverhill places 31,597 of 40,283 ZIP codes in this dataset. Within MA, it ranks 457 of 712.
Learn more
the frost range explains how to read the range around Haverhill's dates instead of trusting one, and local microclimates explains what one yard in Haverhill can differ from the 03873 normal.