Rockland, ME 04683 Frost Dates
Rockland, ME: when does the frost end?
Around 05/07 is the usual last spring frost, about 252 days away. Fall's first freeze usually shows up around 10/05, roughly 151 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Rockland in Zone 6a (-10 to -5°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 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
05/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/21 and only about 1 year in 10 sees frost after that.
Rockland against the rest of the dataset
About 151 days separate Rockland's last and first frost, putting it 34,980 of 40,283 ZIP codes nationally. Within ME, it ranks 252 of 456.
Learn more
Before leaning on 04683's figures: the frost range explains how to read the range around Rockland's dates instead of trusting one, while local microclimates explains what one yard in Rockland can differ from the 04683 normal.