Kingsley, MI 49666 Frost Dates
49666, near Kingsley, MI: the frost window
Around 05/12 is the usual last spring frost, about 257 days away. Fall's first freeze usually shows up around 10/16, roughly 155 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Kingsley in Zone 5b (-15 to -10°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
Kingsley's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/12 isn't a guarantee
05/12 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 05/27 and only about 1 year in 10 sees frost after that.
Kingsley against the rest of the dataset
About 155 days separate Kingsley's last and first frost, putting it 34,024 of 40,283 ZIP codes nationally. Within MI, it ranks 785 of 1,153.
Learn more
Two guides worth reading on 49666: local microclimates, on what one yard in Kingsley can differ from the 49666 normal, and zone vs. frost date, on why Zone 5b and Kingsley's frost date answer different questions.