Kaleva, MI 49619 Frost Dates
Kaleva, MI: when does the frost end?
Typically, the last spring freeze lands around 05/28, roughly 273 days out. Fall's first freeze usually shows up around 09/25, roughly 119 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Kaleva in Zone 5b (-15 to -10°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
With roughly 4 weeks until Kaleva's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/28 isn't a guarantee
05/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/13 and only about 1 year in 10 sees frost after that.
Kaleva against the rest of the dataset
About 119 days separate Kaleva's last and first frost, putting it 39,159 of 40,283 ZIP codes nationally. Within MI, it ranks 1,103 of 1,153.
Learn more
Before leaning on 49619's figures: zone vs. frost date explains why Zone 5b and Kaleva's frost date answer different questions, while the frost range explains how to read the range around Kaleva's dates instead of trusting one.