Oakley, MI 48649 Frost Dates
Frost dates for Oakley, MI, ZIP 48649
The last spring frost here typically falls around 05/01, about 246 days from today. 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
Zone 6a around Oakley has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
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
About 164 days separate Oakley's last and first frost, putting it 31,182 of 40,283 ZIP codes nationally. Within MI, it ranks 511 of 1,153.
Learn more
zone vs. frost date explains why Zone 6a and Oakley's frost date answer different questions, and the frost range explains how to read the range around Oakley's dates instead of trusting one.