Wayne, MI 48186 Frost Dates
48186, near Wayne, MI: the frost window
Around 04/20 is the usual last spring frost, about 235 days away. Fall's first freeze usually shows up around 10/27, roughly 188 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Wayne in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Wayne's growing season runs out in roughly 9 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 Wayne's last frost
04/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/08 and only about 1 year in 10 sees frost after that.
Wayne against the rest of the dataset
At roughly 188 frost-free days, Wayne places 21,885 of 40,283 ZIP codes in this dataset. Within MI, it ranks 55 of 1,153.
Learn more
Two guides worth reading on 48186: zone vs. frost date, on why Zone 6b and Wayne's frost date answer different questions, and the frost range, on how to read the range around Wayne's dates instead of trusting one.