Dearborn Heights, MI 48127 Frost Dates
Frost dates for Dearborn Heights, MI, ZIP 48127
Around 05/01 is the usual last spring frost, about 246 days away. The first fall frost typically arrives around 10/15, about 166 frost-free days later.
Zone 6b (-5 to 0°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 Dearborn Heights, not a forecast for this year.
What to do before the first frost
Zone 6b around Dearborn Heights has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Dearborn Heights's last frost
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dearborn Heights compares
Dearborn Heights's growing season runs about 166 days, ranking 30,280 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 383 of 1,153.
Learn more
the frost range explains how to read the range around Dearborn Heights's dates instead of trusting one, and local microclimates explains what one yard in Dearborn Heights can differ from the 48127 normal.