Boyne Falls, MI 49713 Frost Dates
When can you plant in Boyne Falls, MI?
The last spring frost here typically falls around 05/23, about 268 days from today. The first fall frost typically arrives around 10/03, about 133 frost-free days later.
The USDA Plant Hardiness Zone Map puts Boyne Falls 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
About 5 weeks of growing season left in Boyne Falls before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/23 isn't a guarantee
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 Falls compares
About 133 days separate Boyne Falls's last and first frost, putting it 38,123 of 40,283 ZIP codes nationally. Within MI, it ranks 1,011 of 1,153.
Learn more
zone vs. frost date covers why Zone 5a and Boyne Falls's frost date answer different questions. the frost range covers how to read the range around Boyne Falls's dates instead of trusting one.