Ecorse, MI 48275 Frost Dates
48275, near Ecorse, MI: the frost window
The last spring frost here typically falls around 05/01, about 246 days from today. Fall's first freeze usually shows up around 10/15, roughly 166 days after the last spring frost.
Zone 6b (-5 to 0°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Ecorse, not a forecast for this year.
Stretching the season past the first frost
Ecorse'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
05/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/18 and only about 1 year in 10 sees frost after that.
Ecorse against the rest of the dataset
At roughly 166 frost-free days, Ecorse places 30,345 of 40,283 ZIP codes in this dataset. Within MI, it ranks 413 of 1,153.
Learn more
Two guides worth reading on 48275: local microclimates, on what one yard in Ecorse can differ from the 48275 normal, and zone vs. frost date, on why Zone 6b and Ecorse's frost date answer different questions.