Mancelona, MI 49659 Frost Dates
Mancelona, MI: when does the frost end?
Around 05/24 is the usual last spring frost, about 269 days away. Fall's first freeze usually shows up around 10/01, roughly 128 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Mancelona in Zone 5a (-20 to -15°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 5 weeks until Mancelona's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/24 isn't a guarantee
05/24 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/07 and only about 1 year in 10 sees frost after that.
Mancelona against the rest of the dataset
At roughly 128 frost-free days, Mancelona places 38,547 of 40,283 ZIP codes in this dataset. Within MI, it ranks 1,048 of 1,153.
Learn more
Before leaning on 49659's figures: zone vs. frost date explains why Zone 5a and Mancelona's frost date answer different questions, while the frost range explains how to read the range around Mancelona's dates instead of trusting one.