Montrose, MI 48457 Frost Dates
Montrose, MI: when does the frost end?
The last spring frost here typically falls around 05/03, about 248 days from today. Fall's first freeze usually shows up around 10/13, roughly 162 days after the last spring frost.
Montrose sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 7 weeks until Montrose'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
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/20 and only about 1 year in 10 sees frost after that.
Montrose against the rest of the dataset
About 162 days separate Montrose's last and first frost, putting it 31,767 of 40,283 ZIP codes nationally. Within MI, it ranks 549 of 1,153.
Learn more
Before leaning on 48457's figures: the frost range explains how to read the range around Montrose's dates instead of trusting one, while local microclimates explains what one yard in Montrose can differ from the 48457 normal.