Old Town, ME 04460 Frost Dates
Frost dates for Old Town, ME, ZIP 04460
Typically, the last spring freeze lands around 05/17, roughly 262 days out. The first fall frost typically arrives around 09/29, about 133 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
Zone 5a around Old Town has about 5 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Old Town's last frost
05/17 is the middle of 30 years of NOAA records, not a promise. Plant by 05/01 and you're betting against frost in roughly 9 years out of 10. 05/31 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 133 days, ranking 38,051 of 40,283 US ZIP codes measured here, longest to shortest. Within ME, it ranks 411 of 456.
Learn more
zone vs. frost date explains why Zone 5a and Old Town's frost date answer different questions, and the frost range explains how to read the range around Old Town's dates instead of trusting one.