Ellsworth, ME 04674 Frost Dates
Ellsworth, ME: when does the frost end?
Typically, the last spring freeze lands around 04/27, roughly 242 days out. Fall's first freeze usually shows up around 10/22, roughly 177 days after the last spring frost.
Ellsworth sits in USDA Zone 6a (-10 to -5°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 8 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
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/08 and only about 1 year in 10 sees frost after that.
Ellsworth against the rest of the dataset
Ellsworth's growing season runs about 177 days, ranking 26,082 of 40,283 US ZIP codes measured here, longest to shortest. Within ME, it ranks 46 of 456.
Learn more
Before leaning on 04674's figures: local microclimates explains what one yard in Ellsworth can differ from the 04674 normal, while zone vs. frost date explains why Zone 6a and Ellsworth's frost date answer different questions.