Center Line, MI 48091 Frost Dates
When can you plant in Center Line, MI?
The last spring frost here typically falls around 04/21, about 236 days from today. The first fall frost typically arrives around 10/31, about 190 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 Center Line, not a forecast for this year.
What to do before the first frost
About 9 weeks of growing season left in Center Line before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Center Line's last frost
04/21 is the middle of 30 years of NOAA records, not a promise. Plant by 04/07 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Center Line compares
Center Line's growing season runs about 190 days, ranking 21,113 of 40,283 US ZIP codes measured here, longest to shortest. Within MI, it ranks 39 of 1,153.
Learn more
local microclimates covers what one yard in Center Line can differ from the 48091 normal. zone vs. frost date covers why Zone 6b and Center Line's frost date answer different questions.