Cambridge, MA 02215 Frost Dates
When can you plant in Cambridge, MA?
Around 04/19 is the usual last spring frost, about 234 days away. The first fall frost typically arrives around 10/23, about 185 frost-free days later.
Cambridge 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
About 8 weeks of growing season left in Cambridge before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Cambridge's last frost
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 Cambridge compares
About 185 days separate Cambridge's last and first frost, putting it 23,023 of 40,283 ZIP codes nationally. Within MA, it ranks 175 of 712.
Learn more
the frost range covers how to read the range around Cambridge's dates instead of trusting one. local microclimates covers what one yard in Cambridge can differ from the 02215 normal.