Ellsworth, ME 04664 Frost Dates
When can you plant in Ellsworth, ME?
Around 04/27 is the usual last spring frost, about 242 days away. The first fall frost typically arrives around 10/22, about 177 frost-free days later.
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.
What to do before the first frost
About 8 weeks of growing season left in Ellsworth before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Ellsworth's last frost
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/15 and you're betting against frost in roughly 9 years out of 10. 05/08 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Ellsworth compares
Ellsworth's growing season runs about 177 days, ranking 26,079 of 40,283 US ZIP codes measured here, longest to shortest. Within ME, it ranks 43 of 456.
Learn more
zone vs. frost date covers why Zone 5b and Ellsworth's frost date answer different questions. the frost range covers how to read the range around Ellsworth's dates instead of trusting one.