Sheridan, MI 48870 Frost Dates
48870, near Sheridan, MI: the frost window
Around 05/03 is the usual last spring frost, about 248 days away. Fall's first freeze usually shows up around 10/12, roughly 161 days after the last spring frost.
Sheridan 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
Sheridan's growing season runs out in roughly 6 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
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/21 and only about 1 year in 10 sees frost after that.
Sheridan against the rest of the dataset
At roughly 161 frost-free days, Sheridan places 32,118 of 40,283 ZIP codes in this dataset. Within MI, it ranks 593 of 1,153.
Learn more
Two guides worth reading on 48870: the frost range, on how to read the range around Sheridan's dates instead of trusting one, and local microclimates, on what one yard in Sheridan can differ from the 48870 normal.