Newton, MA 02464 Frost Dates
02464, near Newton, MA: the frost window
The last spring frost here typically falls around 04/19, about 234 days from today. Fall's first freeze usually shows up around 10/23, roughly 185 days after the last spring frost.
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 Newton, not a forecast for this year.
Stretching the season past the first frost
Newton's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/03 and only about 1 year in 10 sees frost after that.
Newton against the rest of the dataset
At roughly 185 frost-free days, Newton places 23,040 of 40,283 ZIP codes in this dataset. Within MA, it ranks 187 of 712.
Learn more
Two guides worth reading on 02464: local microclimates, on what one yard in Newton can differ from the 02464 normal, and zone vs. frost date, on why Zone 6b and Newton's frost date answer different questions.