Milan, MI 48191 Frost Dates
When can you plant in Milan, MI?
The last spring frost here typically falls around 05/03, about 248 days from today. The first fall frost typically arrives around 10/10, about 158 frost-free days later.
The USDA Plant Hardiness Zone Map puts Milan in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 6 weeks of growing season left in Milan before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
05/03 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. 05/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Milan compares
Milan's growing season runs about 158 days, ranking 32,961 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 662 of 1,153.
Learn more
zone vs. frost date covers why Zone 6a and Milan's frost date answer different questions. the frost range covers how to read the range around Milan's dates instead of trusting one.