McBain, MI 49657 Frost Dates
49657, near McBain, MI: the frost window
Around 05/22 is the usual last spring frost, about 267 days away. Fall's first freeze usually shows up around 09/26, roughly 125 days after the last spring frost.
Zone 5a (-20 to -15°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 McBain, not a forecast for this year.
Stretching the season past the first frost
McBain's growing season runs out in roughly 4 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around McBain's last frost
05/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/08 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/06 and only about 1 year in 10 sees frost after that.
McBain against the rest of the dataset
At roughly 125 frost-free days, McBain places 38,788 of 40,283 ZIP codes in this dataset. Within MI, it ranks 1,081 of 1,153.
Learn more
Two guides worth reading on 49657: the frost range, on how to read the range around McBain's dates instead of trusting one, and local microclimates, on what one yard in McBain can differ from the 49657 normal.