Sand Lake, MI 49343 Frost Dates
49343, near Sand Lake, 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.
The USDA Plant Hardiness Zone Map puts Sand Lake 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
Sand Lake'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.
How much risk comes with planting early here
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.
Sand Lake against the rest of the dataset
At roughly 135 frost-free days, Sand Lake places 37,908 of 40,283 ZIP codes in this dataset. Within MI, it ranks 981 of 1,153.
Learn more
Two guides worth reading on 49343: local microclimates, on what one yard in Sand Lake can differ from the 49343 normal, and zone vs. frost date, on why Zone 6a and Sand Lake's frost date answer different questions.