Ecorse, MI 48288 Frost Dates
48288, near Ecorse, MI: the frost window
Around 05/01 is the usual last spring frost, about 246 days away. Fall's first freeze usually shows up around 10/15, roughly 166 days after the last spring frost.
Ecorse sits in USDA Zone 6b (-5 to 0°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
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.
Why 05/01 isn't a guarantee
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
About 166 days separate Ecorse's last and first frost, putting it 30,349 of 40,283 ZIP codes nationally. Within MI, it ranks 417 of 1,153.
Learn more
Two guides worth reading on 48288: local microclimates, on what one yard in Ecorse can differ from the 48288 normal, and zone vs. frost date, on why Zone 6b and Ecorse's frost date answer different questions.