Algonac, MI 48001 Frost Dates
When can you plant in Algonac, MI?
Typically, the last spring freeze lands around 05/03, roughly 248 days out. The first fall frost typically arrives around 10/18, about 167 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 Algonac, not a forecast for this year.
What to do before the first frost
About 7 weeks of growing season left in Algonac 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 04/20 and you're betting against frost in roughly 9 years out of 10. 05/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Algonac compares
Algonac's growing season runs about 167 days, ranking 29,971 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 364 of 1,153.
Learn more
zone vs. frost date covers why Zone 6b and Algonac's frost date answer different questions. the frost range covers how to read the range around Algonac's dates instead of trusting one.