Presque Isle, ME 04738 Frost Dates
04738, near Presque Isle, ME: the frost window
The last spring frost here typically falls around 05/30, about 275 days from today. Fall's first freeze usually shows up around 09/13, roughly 106 days after the last spring frost.
Zone 4a (-30 to -25°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Presque Isle, not a forecast for this year.
Stretching the season past the first frost
Presque Isle's growing season runs out in roughly 2 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 Presque Isle's last frost
05/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/12 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 106 days, ranking 39,577 of 40,283 US ZIP codes measured here, longest to shortest. Within ME, it ranks 453 of 456.
Learn more
Two guides worth reading on 04738: zone vs. frost date, on why Zone 4a and Presque Isle's frost date answer different questions, and the frost range, on how to read the range around Presque Isle's dates instead of trusting one.