Perrinton, MI 48856 Frost Dates
Frost dates for Perrinton, MI, ZIP 48856
Around 05/01 is the usual last spring frost, about 246 days away. The first fall frost typically arrives around 10/13, about 164 frost-free days later.
The USDA Plant Hardiness Zone Map puts Perrinton 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 Perrinton 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.
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. 05/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Perrinton compares
Perrinton's growing season runs about 164 days, ranking 31,148 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 510 of 1,153.
Learn more
the frost range explains how to read the range around Perrinton's dates instead of trusting one, and local microclimates explains what one yard in Perrinton can differ from the 48856 normal.