Ellsworth, ME 04614 Frost Dates
04614, near Ellsworth, ME: the frost window
The last spring frost here typically falls around 05/08, about 253 days from today. Fall's first freeze usually shows up around 10/09, roughly 152 days after the last spring frost.
Ellsworth sits in USDA Zone 5b (-15 to -10°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
Ellsworth's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Ellsworth's last frost
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
At roughly 152 frost-free days, Ellsworth places 34,720 of 40,283 ZIP codes in this dataset. Within ME, it ranks 234 of 456.
Learn more
Two guides worth reading on 04614: local microclimates, on what one yard in Ellsworth can differ from the 04614 normal, and zone vs. frost date, on why Zone 5b and Ellsworth's frost date answer different questions.