Brewer, ME 04416 Frost Dates
Frost dates for Brewer, ME, ZIP 04416
The last spring frost here typically falls around 05/04, about 249 days from today. The first fall frost typically arrives around 10/04, about 152 frost-free days later.
The USDA Plant Hardiness Zone Map puts Brewer in Zone 5a (-20 to -15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 5a around Brewer has about 5 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 05/04 isn't a guarantee
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Brewer compares
Brewer's growing season runs about 152 days, ranking 34,712 of 40,283 US ZIP codes measured here, longest to shortest. Within ME, it ranks 227 of 456.
Learn more
zone vs. frost date explains why Zone 5a and Brewer's frost date answer different questions, and the frost range explains how to read the range around Brewer's dates instead of trusting one.