Dearborn Heights, MI 48128 Frost Dates
Dearborn Heights, MI: when does the frost end?
Around 05/01 is the usual last spring frost, about 246 days away. Fall's first freeze usually shows up around 10/15, roughly 166 days after the last spring frost.
Dearborn Heights 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 7 weeks until Dearborn Heights's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Dearborn Heights's last frost
05/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/17 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/18 and only about 1 year in 10 sees frost after that.
Dearborn Heights against the rest of the dataset
About 166 days separate Dearborn Heights's last and first frost, putting it 30,281 of 40,283 ZIP codes nationally. Within MI, it ranks 384 of 1,153.
Learn more
Before leaning on 48128's figures: local microclimates explains what one yard in Dearborn Heights can differ from the 48128 normal, while zone vs. frost date explains why Zone 6b and Dearborn Heights's frost date answer different questions.