Gladstone, MI 49837 Frost Dates
When can you plant in Gladstone, MI?
Around 05/18 is the usual last spring frost, about 263 days away. The first fall frost typically arrives around 10/04, about 137 frost-free days later.
The USDA Plant Hardiness Zone Map puts Gladstone in Zone 5a (-20 to -15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 5 weeks of growing season left in Gladstone before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Gladstone's last frost
05/18 is the middle of 30 years of NOAA records, not a promise. Plant by 05/03 and you're betting against frost in roughly 9 years out of 10. 06/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Gladstone compares
At roughly 137 frost-free days, Gladstone places 37,509 of 40,283 ZIP codes in this dataset. Within MI, it ranks 938 of 1,153.
Learn more
local microclimates covers what one yard in Gladstone can differ from the 49837 normal. zone vs. frost date covers why Zone 5a and Gladstone's frost date answer different questions.