Hancock, MI 49930 Frost Dates
Frost dates for Hancock, MI, ZIP 49930
The last spring frost here typically falls around 05/17, about 262 days from today. The first fall frost typically arrives around 10/01, about 138 frost-free days later.
The USDA Plant Hardiness Zone Map puts Hancock in Zone 5b (-15 to -10°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 5b around Hancock has about 5 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
05/17 is the middle of 30 years of NOAA records, not a promise. Plant by 05/01 and you're betting against frost in roughly 9 years out of 10. 06/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hancock compares
Hancock's growing season runs about 138 days, ranking 37,380 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 923 of 1,153.
Learn more
local microclimates explains what one yard in Hancock can differ from the 49930 normal, and zone vs. frost date explains why Zone 5b and Hancock's frost date answer different questions.