Milford, MI 48380 Frost Dates
Frost dates for Milford, MI, ZIP 48380
Typically, the last spring freeze lands around 05/06, roughly 251 days out. The first fall frost typically arrives around 10/12, about 157 frost-free days later.
Zone 6a (-10 to -5°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 Milford, not a forecast for this year.
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
At roughly 157 frost-free days, Milford places 33,300 of 40,283 ZIP codes in this dataset. Within MI, it ranks 723 of 1,153.
Learn more
zone vs. frost date explains why Zone 6a and Milford's frost date answer different questions, and the frost range explains how to read the range around Milford's dates instead of trusting one.