Haverhill, MA 03826 Frost Dates
When can you plant in Haverhill, MA?
Around 04/30 is the usual last spring frost, about 245 days away. The first fall frost typically arrives around 10/11, about 162 frost-free days later.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Haverhill, not a forecast for this year.
What to do before the first frost
About 6 weeks of growing season left in Haverhill before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
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
Haverhill's growing season runs about 162 days, ranking 31,595 of 40,283 US ZIP codes measured here, longest to shortest. Within MA, it ranks 455 of 712.
Learn more
zone vs. frost date covers why Zone 6a and Haverhill's frost date answer different questions. the frost range covers how to read the range around Haverhill's dates instead of trusting one.