Ellsworth, ME 04625 Frost Dates
04625, near Ellsworth, ME: the frost window
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 6b (-5 to 0°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 8 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
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 26,073 of 40,283 US ZIP codes measured here, longest to shortest. Within ME, it ranks 37 of 456.
Learn more
Two guides worth reading on 04625: local microclimates, on what one yard in Ellsworth can differ from the 04625 normal, and zone vs. frost date, on why Zone 6b and Ellsworth's frost date answer different questions.