Boyne City, MI 49712 Frost Dates
When can you plant in Boyne City, MI?
Around 05/23 is the usual last spring frost, about 268 days away. The first fall frost typically arrives around 10/03, about 133 frost-free days later.
The USDA Plant Hardiness Zone Map puts Boyne City 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 5 weeks of growing season left in Boyne City before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
05/23 is the middle of 30 years of NOAA records, not a promise. Plant by 05/04 and you're betting against frost in roughly 9 years out of 10. 06/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Boyne City compares
Boyne City's growing season runs about 133 days, ranking 38,059 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 994 of 1,153.
Learn more
local microclimates covers what one yard in Boyne City can differ from the 49712 normal. zone vs. frost date covers why Zone 5b and Boyne City's frost date answer different questions.