Ecorse, MI 48278 Frost Dates
Frost dates for Ecorse, MI, ZIP 48278
Around 05/01 is the usual last spring frost, about 246 days away. The first fall frost typically arrives around 10/15, about 166 frost-free days later.
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.
What to do before the first frost
Zone 6b around Ecorse has about 7 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.
The actual range around Ecorse's last frost
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Ecorse compares
About 166 days separate Ecorse's last and first frost, putting it 30,347 of 40,283 ZIP codes nationally. Within MI, it ranks 415 of 1,153.
Learn more
zone vs. frost date explains why Zone 6b and Ecorse's frost date answer different questions, and the frost range explains how to read the range around Ecorse's dates instead of trusting one.