Pinckney, MI 48169 Frost Dates
Pinckney, MI: when does the frost end?
Typically, the last spring freeze lands around 04/30, roughly 245 days out. Fall's first freeze usually shows up around 10/14, roughly 166 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Pinckney in Zone 6a (-10 to -5°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 7 weeks until Pinckney's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/30 isn't a guarantee
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/16 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/17 and only about 1 year in 10 sees frost after that.
Pinckney against the rest of the dataset
At roughly 166 frost-free days, Pinckney places 30,385 of 40,283 ZIP codes in this dataset. Within MI, it ranks 418 of 1,153.
Learn more
Before leaning on 48169's figures: zone vs. frost date explains why Zone 6a and Pinckney's frost date answer different questions, while the frost range explains how to read the range around Pinckney's dates instead of trusting one.