Caro, MI 48723 Frost Dates
Caro, MI: when does the frost end?
Typically, the last spring freeze lands around 05/07, roughly 252 days out. Fall's first freeze usually shows up around 10/09, roughly 154 days after the last spring frost.
Caro sits in USDA Zone 6a (-10 to -5°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 6 weeks until Caro's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/07 isn't a guarantee
05/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/24 and only about 1 year in 10 sees frost after that.
Caro against the rest of the dataset
Caro's growing season runs about 154 days, ranking 34,274 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 788 of 1,153.
Learn more
Before leaning on 48723's figures: zone vs. frost date explains why Zone 6a and Caro's frost date answer different questions, while the frost range explains how to read the range around Caro's dates instead of trusting one.