Wolverine, MI 49799 Frost Dates
Wolverine, MI: when does the frost end?
Typically, the last spring freeze lands around 06/07, roughly 283 days out. Fall's first freeze usually shows up around 09/14, roughly 95 days after the last spring frost.
Wolverine sits in USDA Zone 4b (-25 to -20°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
With roughly 2 weeks until Wolverine's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 06/07 isn't a guarantee
06/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/29 and only about 1 year in 10 sees frost after that.
Wolverine against the rest of the dataset
Wolverine's growing season runs about 95 days, ranking 39,816 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 1,146 of 1,153.
Learn more
Before leaning on 49799's figures: the frost range explains how to read the range around Wolverine's dates instead of trusting one, while local microclimates explains what one yard in Wolverine can differ from the 49799 normal.