Oakley, MI 48841 Frost Dates
When can you plant in Oakley, MI?
Around 05/01 is the usual last spring frost, about 246 days away. The first fall frost typically arrives around 10/15, about 164 frost-free days later.
The USDA Plant Hardiness Zone Map puts Oakley in Zone 6a (-10 to -5°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 7 weeks of growing season left in Oakley before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/01 isn't a guarantee
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Oakley compares
At roughly 164 frost-free days, Oakley places 31,183 of 40,283 ZIP codes in this dataset. Within MI, it ranks 512 of 1,153.
Learn more
local microclimates covers what one yard in Oakley can differ from the 48841 normal. zone vs. frost date covers why Zone 6a and Oakley's frost date answer different questions.