Gladstone, MI 49818 Frost Dates
49818, near Gladstone, MI: the frost window
The last spring frost here typically falls around 05/19, about 264 days from today. Fall's first freeze usually shows up around 10/01, roughly 133 days after the last spring frost.
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.
Stretching the season past the first frost
Gladstone'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.
The actual range around Gladstone's last frost
05/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/03 and only about 1 year in 10 sees frost after that.
Gladstone against the rest of the dataset
At roughly 133 frost-free days, Gladstone places 38,056 of 40,283 ZIP codes in this dataset. Within MI, it ranks 992 of 1,153.
Learn more
Two guides worth reading on 49818: local microclimates, on what one yard in Gladstone can differ from the 49818 normal, and zone vs. frost date, on why Zone 5a and Gladstone's frost date answer different questions.