Beaverton, MI 48612 Frost Dates
48612, near Beaverton, MI: the frost window
The last spring frost here typically falls around 05/09, about 254 days from today. Fall's first freeze usually shows up around 10/04, roughly 148 days after the last spring frost.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Beaverton, not a forecast for this year.
Stretching the season past the first frost
Beaverton'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.
Why 05/09 isn't a guarantee
05/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/26 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.
Beaverton against the rest of the dataset
Beaverton's growing season runs about 148 days, ranking 35,741 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 844 of 1,153.
Learn more
Two guides worth reading on 48612: zone vs. frost date, on why Zone 6a and Beaverton's frost date answer different questions, and the frost range, on how to read the range around Beaverton's dates instead of trusting one.