Milford, MI 48357 Frost Dates
Frost dates for Milford, MI, ZIP 48357
Around 05/06 is the usual last spring frost, about 251 days away. The first fall frost typically arrives around 10/12, about 157 frost-free days later.
Milford 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 Milford has about 6 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.
Why 05/06 isn't a guarantee
05/06 is the middle of 30 years of NOAA records, not a promise. Plant by 04/21 and you're betting against frost in roughly 9 years out of 10. 05/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Milford compares
Milford's growing season runs about 157 days, ranking 33,299 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 722 of 1,153.
Learn more
local microclimates explains what one yard in Milford can differ from the 48357 normal, and zone vs. frost date explains why Zone 6a and Milford's frost date answer different questions.