Greenville, MI 48838 Frost Dates
When can you plant in Greenville, MI?
Typically, the last spring freeze lands around 05/18, roughly 263 days out. The first fall frost typically arrives around 09/28, about 133 frost-free days later.
Greenville sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 4 weeks of growing season left in Greenville before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Greenville's last frost
05/18 is the middle of 30 years of NOAA records, not a promise. Plant by 04/29 and you're betting against frost in roughly 9 years out of 10. 06/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Greenville compares
About 133 days separate Greenville's last and first frost, putting it 38,038 of 40,283 ZIP codes nationally. Within MI, it ranks 989 of 1,153.
Learn more
zone vs. frost date covers why Zone 6a and Greenville's frost date answer different questions. the frost range covers how to read the range around Greenville's dates instead of trusting one.