Auburn Hills, MI 48326 Frost Dates
Auburn Hills, MI: when does the frost end?
Typically, the last spring freeze lands around 04/29, roughly 244 days out. Fall's first freeze usually shows up around 10/20, roughly 172 days after the last spring frost.
Zone 6a (-10 to -5°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 Auburn Hills, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Auburn Hills'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
04/29 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 05/14 and only about 1 year in 10 sees frost after that.
Auburn Hills against the rest of the dataset
About 172 days separate Auburn Hills's last and first frost, putting it 28,171 of 40,283 ZIP codes nationally. Within MI, it ranks 250 of 1,153.
Learn more
Before leaning on 48326's figures: the frost range explains how to read the range around Auburn Hills's dates instead of trusting one, while local microclimates explains what one yard in Auburn Hills can differ from the 48326 normal.