Norway, MI 49877 Frost Dates
49877, near Norway, MI: the frost window
The last spring frost here typically falls around 05/13, about 258 days from today. Fall's first freeze usually shows up around 10/02, roughly 141 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Norway in Zone 4b (-25 to -20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Norway's growing season runs out in roughly 5 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
05/13 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/29 and only about 1 year in 10 sees frost after that.
Norway against the rest of the dataset
Norway's growing season runs about 141 days, ranking 36,913 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 908 of 1,153.
Learn more
Two guides worth reading on 49877: the frost range, on how to read the range around Norway's dates instead of trusting one, and local microclimates, on what one yard in Norway can differ from the 49877 normal.