Grand Rapids, OH 43522 Frost Dates
Grand Rapids, OH: when does the frost end?
Typically, the last spring freeze lands around 04/22, roughly 237 days out. Fall's first freeze usually shows up around 10/24, roughly 188 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts 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.
Stretching the season past the first frost
With roughly 8 weeks until Grand Rapids's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Grand Rapids's last frost
04/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/07 and only about 1 year in 10 sees frost after that.
Grand Rapids against the rest of the dataset
Grand Rapids's growing season runs about 188 days, ranking 22,121 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 403 of 1,383.
Learn more
Before leaning on 43522's figures: zone vs. frost date explains why Zone 6a and Grand Rapids's frost date answer different questions, while the frost range explains how to read the range around Grand Rapids's dates instead of trusting one.