East Grand Rapids, MI 49518 Frost Dates
East Grand Rapids, MI: when does the frost end?
The last spring frost here typically falls around 05/06, about 251 days from today. Fall's first freeze usually shows up around 10/10, roughly 157 days after the last spring frost.
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.
Stretching the season past the first frost
With roughly 6 weeks until East Grand Rapids's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/06 isn't a guarantee
05/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/23 and only about 1 year in 10 sees frost after that.
East Grand Rapids against the rest of the dataset
About 157 days separate East Grand Rapids's last and first frost, putting it 33,271 of 40,283 ZIP codes nationally. Within MI, it ranks 712 of 1,153.
Learn more
Before leaning on 49518's figures: local microclimates explains what one yard in East Grand Rapids can differ from the 49518 normal, while zone vs. frost date explains why Zone 6a and East Grand Rapids's frost date answer different questions.