Presque Isle, ME 04471 Frost Dates
Presque Isle, ME: when does the frost end?
Around 05/27 is the usual last spring frost, about 272 days away. Fall's first freeze usually shows up around 09/18, roughly 115 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Presque Isle in Zone 4b (-25 to -20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 3 weeks until Presque Isle'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
05/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/10 and only about 1 year in 10 sees frost after that.
Presque Isle against the rest of the dataset
At roughly 115 frost-free days, Presque Isle places 39,301 of 40,283 ZIP codes in this dataset. Within ME, it ranks 446 of 456.
Learn more
Before leaning on 04471's figures: the frost range explains how to read the range around Presque Isle's dates instead of trusting one, while local microclimates explains what one yard in Presque Isle can differ from the 04471 normal.