Presque Isle, ME 04765 Frost Dates
Presque Isle, ME: when does the frost end?
Around 05/13 is the usual last spring frost, about 258 days away. Fall's first freeze usually shows up around 09/30, roughly 138 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 5 weeks until Presque Isle's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/13 isn't a guarantee
05/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/30 and only about 1 year in 10 sees frost after that.
Presque Isle against the rest of the dataset
Presque Isle's growing season runs about 138 days, ranking 37,368 of 40,283 US ZIP codes measured here, longest to shortest. Within ME, it ranks 368 of 456.
Learn more
Before leaning on 04765'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 04765 normal.