Coopersville, MI 49401 Frost Dates
49401, near Coopersville, MI: the frost window
Around 04/30 is the usual last spring frost, about 245 days away. Fall's first freeze usually shows up around 10/24, roughly 175 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Coopersville 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
Coopersville's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Coopersville's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/16 and only about 1 year in 10 sees frost after that.
Coopersville against the rest of the dataset
At roughly 175 frost-free days, Coopersville places 26,888 of 40,283 ZIP codes in this dataset. Within MI, it ranks 145 of 1,153.
Learn more
Two guides worth reading on 49401: local microclimates, on what one yard in Coopersville can differ from the 49401 normal, and zone vs. frost date, on why Zone 6a and Coopersville's frost date answer different questions.