Kalamazoo, MI 49001 Frost Dates
Kalamazoo, MI: when does the frost end?
Around 04/29 is the usual last spring frost, about 244 days away. Fall's first freeze usually shows up around 10/20, roughly 173 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Kalamazoo in Zone 6a (-10 to -5°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 8 weeks until Kalamazoo's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/29 isn't a guarantee
04/29 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/18 and only about 1 year in 10 sees frost after that.
Kalamazoo against the rest of the dataset
Kalamazoo's growing season runs about 173 days, ranking 27,730 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 192 of 1,153.
Learn more
Before leaning on 49001's figures: local microclimates explains what one yard in Kalamazoo can differ from the 49001 normal, while zone vs. frost date explains why Zone 6a and Kalamazoo's frost date answer different questions.