Auburn, ME 04258 Frost Dates
Frost dates for Auburn, ME, ZIP 04258
Typically, the last spring freeze lands around 04/25, roughly 240 days out. The first fall frost typically arrives around 10/19, about 177 frost-free days later.
Zone 5b (-15 to -10°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 Auburn, not a forecast for this year.
What to do before the first frost
Zone 5b around Auburn has about 7 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.
The actual range around Auburn's last frost
04/25 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Auburn compares
Auburn's growing season runs about 177 days, ranking 26,039 of 40,283 US ZIP codes measured here, longest to shortest. Within ME, it ranks 30 of 456.
Learn more
local microclimates explains what one yard in Auburn can differ from the 04258 normal, and zone vs. frost date explains why Zone 5b and Auburn's frost date answer different questions.