Marysville, MI 48074 Frost Dates
Marysville, MI: when does the frost end?
Typically, the last spring freeze lands around 04/19, roughly 234 days out. Fall's first freeze usually shows up around 11/03, roughly 196 days after the last spring frost.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Marysville, not a forecast for this year.
Stretching the season past the first frost
With roughly 10 weeks until Marysville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/19 isn't a guarantee
04/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/04 and only about 1 year in 10 sees frost after that.
Marysville against the rest of the dataset
Marysville's growing season runs about 196 days, ranking 18,943 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 8 of 1,153.
Learn more
Before leaning on 48074's figures: zone vs. frost date explains why Zone 6a and Marysville's frost date answer different questions, while the frost range explains how to read the range around Marysville's dates instead of trusting one.