Auburn, ME 04270 Frost Dates
When can you plant in Auburn, ME?
Around 05/03 is the usual last spring frost, about 248 days away. The first fall frost typically arrives around 10/07, about 157 frost-free days later.
The USDA Plant Hardiness Zone Map puts Auburn in Zone 5b (-15 to -10°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
About 6 weeks of growing season left in Auburn before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Auburn's last frost
05/03 is the middle of 30 years of NOAA records, not a promise. Plant by 04/23 and you're betting against frost in roughly 9 years out of 10. 05/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Auburn compares
Auburn's growing season runs about 157 days, ranking 33,227 of 40,283 US ZIP codes measured here, longest to shortest. Within ME, it ranks 187 of 456.
Learn more
zone vs. frost date covers why Zone 5b and Auburn's frost date answer different questions. the frost range covers how to read the range around Auburn's dates instead of trusting one.