Coopersville, MI 49430 Frost Dates
49430, near Coopersville, MI: the frost window
The last spring frost here typically falls around 05/14, about 259 days from today. Fall's first freeze usually shows up around 09/29, roughly 135 days after the last spring frost.
Coopersville 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
Coopersville's growing season runs out in roughly 5 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
05/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/29 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/31 and only about 1 year in 10 sees frost after that.
Coopersville against the rest of the dataset
About 135 days separate Coopersville's last and first frost, putting it 37,853 of 40,283 ZIP codes nationally. Within MI, it ranks 967 of 1,153.
Learn more
Two guides worth reading on 49430: zone vs. frost date, on why Zone 6a and Coopersville's frost date answer different questions, and the frost range, on how to read the range around Coopersville's dates instead of trusting one.