Medford, MA 02155 Frost Dates
When can you plant in Medford, MA?
Typically, the last spring freeze lands around 04/04, roughly 219 days out. The first fall frost typically arrives around 11/09, about 218 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 Medford, not a forecast for this year.
What to do before the first frost
About 10 weeks of growing season left in Medford before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Medford's last frost
04/04 is the middle of 30 years of NOAA records, not a promise. Plant by 03/25 and you're betting against frost in roughly 9 years out of 10. 04/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Medford compares
At roughly 218 frost-free days, Medford places 13,186 of 40,283 ZIP codes in this dataset. Within MA, it ranks 21 of 712.
Learn more
local microclimates covers what one yard in Medford can differ from the 02155 normal. zone vs. frost date covers why Zone 6b and Medford's frost date answer different questions.