Rockland, ME 04852 Frost Dates
Rockland, ME: when does the frost end?
Around 04/27 is the usual last spring frost, about 242 days away. Fall's first freeze usually shows up around 10/25, roughly 178 days after the last spring frost.
Zone 6b (-5 to 0°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 Rockland, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Rockland's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Rockland's last frost
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/17 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.
Rockland against the rest of the dataset
At roughly 178 frost-free days, Rockland places 25,666 of 40,283 ZIP codes in this dataset. Within ME, it ranks 7 of 456.
Learn more
Before leaning on 04852's figures: local microclimates explains what one yard in Rockland can differ from the 04852 normal, while zone vs. frost date explains why Zone 6b and Rockland's frost date answer different questions.