Newburyport, MA 01969 Frost Dates
Frost dates for Newburyport, MA, ZIP 01969
Typically, the last spring freeze lands around 05/03, roughly 248 days out. The first fall frost typically arrives around 10/08, about 158 frost-free days later.
Zone 6b (-5 to 0°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 Newburyport, not a forecast for this year.
What to do before the first frost
Zone 6b around Newburyport 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
05/03 is the middle of 30 years of NOAA records, not a promise. Plant by 04/22 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Newburyport compares
About 158 days separate Newburyport's last and first frost, putting it 32,927 of 40,283 ZIP codes nationally. Within MA, it ranks 583 of 712.
Learn more
zone vs. frost date explains why Zone 6b and Newburyport's frost date answer different questions, and the frost range explains how to read the range around Newburyport's dates instead of trusting one.