Eastport, ME 04666 Frost Dates
When can you plant in Eastport, ME?
Around 05/05 is the usual last spring frost, about 250 days away. The first fall frost typically arrives around 10/13, about 160 frost-free days later.
Zone 5b (-15 to -10°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 Eastport, not a forecast for this year.
What to do before the first frost
About 7 weeks of growing season left in Eastport before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
05/05 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 and you're betting against frost in roughly 9 years out of 10. 05/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Eastport compares
Eastport's growing season runs about 160 days, ranking 32,419 of 40,283 US ZIP codes measured here, longest to shortest. Within ME, it ranks 155 of 456.
Learn more
local microclimates covers what one yard in Eastport can differ from the 04666 normal. zone vs. frost date covers why Zone 5b and Eastport's frost date answer different questions.