Old Town, ME 04449 Frost Dates
Old Town, ME: when does the frost end?
The last spring frost here typically falls around 05/13, about 258 days from today. Fall's first freeze usually shows up around 09/28, roughly 137 days after the last spring frost.
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.
Stretching the season past the first frost
With roughly 4 weeks until Old Town's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/13 isn't a guarantee
05/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/28 and only about 1 year in 10 sees frost after that.
Old Town against the rest of the dataset
At roughly 137 frost-free days, Old Town places 37,500 of 40,283 ZIP codes in this dataset. Within ME, it ranks 381 of 456.
Learn more
Before leaning on 04449's figures: zone vs. frost date explains why Zone 5a and Old Town's frost date answer different questions, while the frost range explains how to read the range around Old Town's dates instead of trusting one.