Old Town, ME 04923 Frost Dates
When can you plant in Old Town, ME?
Typically, the last spring freeze lands around 05/11, roughly 256 days out. The first fall frost typically arrives around 10/01, about 141 frost-free days later.
Zone 5a (-20 to -15°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 Old Town, not a forecast for this year.
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.
The actual range around Old Town's last frost
05/11 is the middle of 30 years of NOAA records, not a promise. Plant by 04/30 and you're betting against frost in roughly 9 years out of 10. 05/25 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 141 days, ranking 36,898 of 40,283 US ZIP codes measured here, longest to shortest. Within ME, it ranks 361 of 456.
Learn more
zone vs. frost date covers why Zone 5a and Old Town's frost date answer different questions. the frost range covers how to read the range around Old Town's dates instead of trusting one.