Brewer, ME 04428 Frost Dates
Brewer, ME: when does the frost end?
The last spring frost here typically falls around 05/01, about 246 days from today. Fall's first freeze usually shows up around 10/06, roughly 157 days after the last spring frost.
Zone 5a (-20 to -15°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 Brewer, not a forecast for this year.
Stretching the season past the first frost
With roughly 6 weeks until Brewer's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Brewer's last frost
05/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/14 and only about 1 year in 10 sees frost after that.
Brewer against the rest of the dataset
At roughly 157 frost-free days, Brewer places 33,282 of 40,283 ZIP codes in this dataset. Within ME, it ranks 190 of 456.
Learn more
Before leaning on 04428's figures: local microclimates explains what one yard in Brewer can differ from the 04428 normal, while zone vs. frost date explains why Zone 5a and Brewer's frost date answer different questions.