Caledonia, MI 49302 Frost Dates
When can you plant in Caledonia, MI?
Around 04/30 is the usual last spring frost, about 245 days away. The first fall frost typically arrives around 10/14, about 167 frost-free days later.
The USDA Plant Hardiness Zone Map puts Caledonia 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 7 weeks of growing season left in Caledonia before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Caledonia's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Caledonia compares
At roughly 167 frost-free days, Caledonia places 30,036 of 40,283 ZIP codes in this dataset. Within MI, it ranks 369 of 1,153.
Learn more
local microclimates covers what one yard in Caledonia can differ from the 49302 normal. zone vs. frost date covers why Zone 6a and Caledonia's frost date answer different questions.