Suttons Bay, MI 49621 Frost Dates
Suttons Bay, MI: when does the frost end?
Around 05/22 is the usual last spring frost, about 267 days away. Fall's first freeze usually shows up around 10/09, roughly 140 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Suttons Bay 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
With roughly 6 weeks until Suttons Bay's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/04 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/06 and only about 1 year in 10 sees frost after that.
Suttons Bay against the rest of the dataset
At roughly 140 frost-free days, Suttons Bay places 37,124 of 40,283 ZIP codes in this dataset. Within MI, it ranks 911 of 1,153.
Learn more
Before leaning on 49621's figures: zone vs. frost date explains why Zone 6b and Suttons Bay's frost date answer different questions, while the frost range explains how to read the range around Suttons Bay's dates instead of trusting one.