Imlay City, MI 48412 Frost Dates
Imlay City, MI: when does the frost end?
Around 05/04 is the usual last spring frost, about 249 days away. Fall's first freeze usually shows up around 10/14, roughly 160 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 Imlay City, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Imlay City'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
05/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/22 and only about 1 year in 10 sees frost after that.
Imlay City against the rest of the dataset
At roughly 160 frost-free days, Imlay City places 32,312 of 40,283 ZIP codes in this dataset. Within MI, it ranks 628 of 1,153.
Learn more
Before leaning on 48412's figures: the frost range explains how to read the range around Imlay City's dates instead of trusting one, while local microclimates explains what one yard in Imlay City can differ from the 48412 normal.