Montague, MI 49437 Frost Dates
Montague, MI: when does the frost end?
Typically, the last spring freeze lands around 05/19, roughly 264 days out. Fall's first freeze usually shows up around 10/04, roughly 136 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 Montague, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Montague's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/19 isn't a guarantee
05/19 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/06 and only about 1 year in 10 sees frost after that.
Montague against the rest of the dataset
At roughly 136 frost-free days, Montague places 37,690 of 40,283 ZIP codes in this dataset. Within MI, it ranks 949 of 1,153.
Learn more
Before leaning on 49437's figures: zone vs. frost date explains why Zone 6a and Montague's frost date answer different questions, while the frost range explains how to read the range around Montague's dates instead of trusting one.