Brighton, MI 48116 Frost Dates
Brighton, MI: when does the frost end?
Around 05/05 is the usual last spring frost, about 250 days away. Fall's first freeze usually shows up around 10/13, roughly 160 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 Brighton, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Brighton's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
05/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/21 and only about 1 year in 10 sees frost after that.
Brighton against the rest of the dataset
At roughly 160 frost-free days, Brighton places 32,285 of 40,283 ZIP codes in this dataset. Within MI, it ranks 621 of 1,153.
Learn more
Before leaning on 48116's figures: local microclimates explains what one yard in Brighton can differ from the 48116 normal, while zone vs. frost date explains why Zone 6a and Brighton's frost date answer different questions.