Old Town, ME 04441 Frost Dates
Old Town, ME: when does the frost end?
The last spring frost here typically falls around 05/07, about 252 days from today. Fall's first freeze usually shows up around 10/09, roughly 153 days after the last spring frost.
Zone 4a (-30 to -25°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.
Stretching the season past the first frost
With roughly 6 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 05/07 isn't a guarantee
05/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/20 and only about 1 year in 10 sees frost after that.
Old Town against the rest of the dataset
About 153 days separate Old Town's last and first frost, putting it 34,506 of 40,283 ZIP codes nationally. Within ME, it ranks 209 of 456.
Learn more
Before leaning on 04441's figures: local microclimates explains what one yard in Old Town can differ from the 04441 normal, while zone vs. frost date explains why Zone 4a and Old Town's frost date answer different questions.