Ecorse, MI 48233 Frost Dates
Ecorse, MI: when does the frost end?
Typically, the last spring freeze lands around 05/01, roughly 246 days out. 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
With roughly 7 weeks until Ecorse's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
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
At roughly 166 frost-free days, Ecorse places 30,333 of 40,283 ZIP codes in this dataset. Within MI, it ranks 401 of 1,153.
Learn more
Before leaning on 48233's figures: local microclimates explains what one yard in Ecorse can differ from the 48233 normal, while zone vs. frost date explains why Zone 6b and Ecorse's frost date answer different questions.