Hart, MI 49436 Frost Dates
Hart, MI: when does the frost end?
Around 05/12 is the usual last spring frost, about 257 days away. Fall's first freeze usually shows up around 10/10, roughly 151 days after the last spring frost.
Hart sits in USDA Zone 6b (-5 to 0°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 Hart'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
05/12 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/28 and only about 1 year in 10 sees frost after that.
Hart against the rest of the dataset
Hart's growing season runs about 151 days, ranking 35,061 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 816 of 1,153.
Learn more
Before leaning on 49436's figures: zone vs. frost date explains why Zone 6b and Hart's frost date answer different questions, while the frost range explains how to read the range around Hart's dates instead of trusting one.