Twining, MI 48766 Frost Dates
48766, near Twining, MI: the frost window
Around 05/05 is the usual last spring frost, about 250 days away. Fall's first freeze usually shows up around 10/10, roughly 156 days after the last spring frost.
Twining sits in USDA Zone 5b (-15 to -10°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
Twining'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.
Why 05/05 isn't a guarantee
05/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/21 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/23 and only about 1 year in 10 sees frost after that.
Twining against the rest of the dataset
About 156 days separate Twining's last and first frost, putting it 33,868 of 40,283 ZIP codes nationally. Within MI, it ranks 764 of 1,153.
Learn more
Two guides worth reading on 48766: the frost range, on how to read the range around Twining's dates instead of trusting one, and local microclimates, on what one yard in Twining can differ from the 48766 normal.