Biddeford, ME 04094 Frost Dates
When can you plant in Biddeford, ME?
Around 05/09 is the usual last spring frost, about 254 days away. The first fall frost typically arrives around 10/03, about 146 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 Biddeford, not a forecast for this year.
What to do before the first frost
About 5 weeks of growing season left in Biddeford before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Biddeford's last frost
05/09 is the middle of 30 years of NOAA records, not a promise. Plant by 04/28 and you're betting against frost in roughly 9 years out of 10. 05/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Biddeford compares
About 146 days separate Biddeford's last and first frost, putting it 36,025 of 40,283 ZIP codes nationally. Within ME, it ranks 340 of 456.
Learn more
the frost range covers how to read the range around Biddeford's dates instead of trusting one. local microclimates covers what one yard in Biddeford can differ from the 04094 normal.