Martin, MI 49344 Frost Dates
49344, near Martin, MI: the frost window
Around 05/04 is the usual last spring frost, about 249 days away. Fall's first freeze usually shows up around 10/15, roughly 160 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Martin 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
Martin'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.
How much risk comes with planting early here
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/22 and only about 1 year in 10 sees frost after that.
Martin against the rest of the dataset
At roughly 160 frost-free days, Martin places 32,501 of 40,283 ZIP codes in this dataset. Within MI, it ranks 646 of 1,153.
Learn more
Two guides worth reading on 49344: zone vs. frost date, on why Zone 6a and Martin's frost date answer different questions, and the frost range, on how to read the range around Martin's dates instead of trusting one.