Lincoln, MI 48721 Frost Dates
48721, near Lincoln, MI: the frost window
Around 05/08 is the usual last spring frost, about 253 days away. Fall's first freeze usually shows up around 10/16, roughly 160 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Lincoln 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
Lincoln'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 05/08 isn't a guarantee
05/08 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 05/24 and only about 1 year in 10 sees frost after that.
Lincoln against the rest of the dataset
At roughly 160 frost-free days, Lincoln places 32,512 of 40,283 ZIP codes in this dataset. Within MI, it ranks 648 of 1,153.
Learn more
Two guides worth reading on 48721: local microclimates, on what one yard in Lincoln can differ from the 48721 normal, and zone vs. frost date, on why Zone 6a and Lincoln's frost date answer different questions.