East Grand Rapids, MI 49502 Frost Dates
Frost dates for East Grand Rapids, MI, ZIP 49502
Around 05/06 is the usual last spring frost, about 251 days away. The first fall frost typically arrives around 10/10, about 157 frost-free days later.
The USDA Plant Hardiness Zone Map puts East Grand Rapids 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 East Grand Rapids has about 6 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
05/06 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 and you're betting against frost in roughly 9 years out of 10. 05/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How East Grand Rapids compares
East Grand Rapids's growing season runs about 157 days, ranking 33,265 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 706 of 1,153.
Learn more
local microclimates explains what one yard in East Grand Rapids can differ from the 49502 normal, and zone vs. frost date explains why Zone 6a and East Grand Rapids's frost date answer different questions.