Frankfort, MI 49635 Frost Dates
Frost dates for Frankfort, MI, ZIP 49635
The last spring frost here typically falls around 05/02, about 247 days from today. The first fall frost typically arrives around 10/26, about 175 frost-free days later.
Zone 6b (-5 to 0°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Frankfort, not a forecast for this year.
What to do before the first frost
Zone 6b around Frankfort has about 8 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
05/02 is the middle of 30 years of NOAA records, not a promise. Plant by 04/19 and you're betting against frost in roughly 9 years out of 10. 05/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Frankfort compares
Frankfort's growing season runs about 175 days, ranking 27,058 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 157 of 1,153.
Learn more
the frost range explains how to read the range around Frankfort's dates instead of trusting one, and local microclimates explains what one yard in Frankfort can differ from the 49635 normal.