Ellsworth, ME 04616 Frost Dates
Ellsworth, ME: when does the frost end?
Around 05/08 is the usual last spring frost, about 253 days away. Fall's first freeze usually shows up around 10/09, roughly 152 days after the last spring frost.
Zone 6a (-10 to -5°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 Ellsworth, not a forecast for this year.
Stretching the season past the first frost
With roughly 6 weeks until Ellsworth's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/08 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 05/23 and only about 1 year in 10 sees frost after that.
Ellsworth against the rest of the dataset
About 152 days separate Ellsworth's last and first frost, putting it 34,721 of 40,283 ZIP codes nationally. Within ME, it ranks 235 of 456.
Learn more
Before leaning on 04616's figures: local microclimates explains what one yard in Ellsworth can differ from the 04616 normal, while zone vs. frost date explains why Zone 6a and Ellsworth's frost date answer different questions.