Buchanan, MI 49107 Frost Dates
49107, near Buchanan, MI: the frost window
Typically, the last spring freeze lands around 04/27, roughly 242 days out. Fall's first freeze usually shows up around 10/25, roughly 180 days after the last spring frost.
Buchanan 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
Buchanan's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/10 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.
Buchanan against the rest of the dataset
At roughly 180 frost-free days, Buchanan places 24,859 of 40,283 ZIP codes in this dataset. Within MI, it ranks 85 of 1,153.
Learn more
Two guides worth reading on 49107: the frost range, on how to read the range around Buchanan's dates instead of trusting one, and local microclimates, on what one yard in Buchanan can differ from the 49107 normal.