Newton, MA 02465 Frost Dates
Frost dates for Newton, MA, ZIP 02465
Typically, the last spring freeze lands around 04/19, roughly 234 days out. The first fall frost typically arrives around 10/23, about 185 frost-free days later.
Newton sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 6b around Newton has about 8 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.
Why 04/19 isn't a guarantee
04/19 is the middle of 30 years of NOAA records, not a promise. Plant by 04/06 and you're betting against frost in roughly 9 years out of 10. 05/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Newton compares
About 185 days separate Newton's last and first frost, putting it 23,041 of 40,283 ZIP codes nationally. Within MA, it ranks 188 of 712.
Learn more
the frost range explains how to read the range around Newton's dates instead of trusting one, and local microclimates explains what one yard in Newton can differ from the 02465 normal.