East Grand Rapids, MI 49506 Frost Dates
Frost dates for East Grand Rapids, MI, ZIP 49506
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.
East Grand Rapids sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a 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.
The actual range around East Grand Rapids's last frost
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 33,266 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 707 of 1,153.
Learn more
zone vs. frost date explains why Zone 6a and East Grand Rapids's frost date answer different questions, and the frost range explains how to read the range around East Grand Rapids's dates instead of trusting one.