Farmington, MI 48335 Frost Dates
Frost dates for Farmington, MI, ZIP 48335
The last spring frost here typically falls around 05/01, about 246 days from today. The first fall frost typically arrives around 10/17, about 165 frost-free days later.
Farmington sits in USDA Zone 6a (-10 to -5°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.
What to do before the first frost
Zone 6a around Farmington 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.
How much risk comes with planting early here
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/19 and you're betting against frost in roughly 9 years out of 10. 05/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Farmington compares
Farmington's growing season runs about 165 days, ranking 30,524 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 442 of 1,153.
Learn more
the frost range explains how to read the range around Farmington's dates instead of trusting one, and local microclimates explains what one yard in Farmington can differ from the 48335 normal.