Old Town, ME 04468 Frost Dates
Frost dates for Old Town, ME, ZIP 04468
Typically, the last spring freeze lands around 05/13, roughly 258 days out. The first fall frost typically arrives around 09/28, about 137 frost-free days later.
The USDA Plant Hardiness Zone Map puts Old Town in Zone 5a (-20 to -15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 5a around Old Town has about 4 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.
Why 05/13 isn't a guarantee
05/13 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. 05/28 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 137 days, ranking 37,503 of 40,283 US ZIP codes measured here, longest to shortest. Within ME, it ranks 384 of 456.
Learn more
the frost range explains how to read the range around Old Town's dates instead of trusting one, and local microclimates explains what one yard in Old Town can differ from the 04468 normal.