Old Town, ME 04930 Frost Dates
When can you plant in Old Town, ME?
Typically, the last spring freeze lands around 05/08, roughly 253 days out. The first fall frost typically arrives around 10/03, about 148 frost-free days later.
Old Town sits in USDA Zone 5a (-20 to -15°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 5 weeks of growing season left in Old Town 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
05/08 is the middle of 30 years of NOAA records, not a promise. Plant by 04/27 and you're betting against frost in roughly 9 years out of 10. 05/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Old Town compares
Old Town's growing season runs about 148 days, ranking 35,701 of 40,283 US ZIP codes measured here, longest to shortest. Within ME, it ranks 321 of 456.
Learn more
local microclimates covers what one yard in Old Town can differ from the 04930 normal. zone vs. frost date covers why Zone 5a and Old Town's frost date answer different questions.