Northville, MI 48167 Frost Dates
Northville, MI: when does the frost end?
The last spring frost here typically falls around 05/01, about 246 days from today. Fall's first freeze usually shows up around 10/17, roughly 165 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 Northville, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Northville'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
05/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/16 and only about 1 year in 10 sees frost after that.
Northville against the rest of the dataset
At roughly 165 frost-free days, Northville places 30,532 of 40,283 ZIP codes in this dataset. Within MI, it ranks 447 of 1,153.
Learn more
Before leaning on 48167's figures: local microclimates explains what one yard in Northville can differ from the 48167 normal, while zone vs. frost date explains why Zone 6a and Northville's frost date answer different questions.