Gladstone, MI 49880 Frost Dates
Frost dates for Gladstone, MI, ZIP 49880
Around 05/19 is the usual last spring frost, about 264 days away. The first fall frost typically arrives around 10/01, about 133 frost-free days later.
Gladstone sits in USDA Zone 5a (-20 to -15°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 5a around Gladstone has about 5 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
05/19 is the middle of 30 years of NOAA records, not a promise. Plant by 05/02 and you're betting against frost in roughly 9 years out of 10. 06/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Gladstone compares
At roughly 133 frost-free days, Gladstone places 38,057 of 40,283 ZIP codes in this dataset. Within MI, it ranks 993 of 1,153.
Learn more
local microclimates explains what one yard in Gladstone can differ from the 49880 normal, and zone vs. frost date explains why Zone 5a and Gladstone's frost date answer different questions.