Onaway, MI 49765 Frost Dates
When can you plant in Onaway, MI?
Typically, the last spring freeze lands around 05/22, roughly 267 days out. The first fall frost typically arrives around 10/02, about 135 frost-free days later.
Zone 5a (-20 to -15°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 Onaway, not a forecast for this year.
What to do before the first frost
About 5 weeks of growing season left in Onaway before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Onaway's last frost
05/22 is the middle of 30 years of NOAA records, not a promise. Plant by 05/03 and you're betting against frost in roughly 9 years out of 10. 06/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Onaway compares
About 135 days separate Onaway's last and first frost, putting it 37,896 of 40,283 ZIP codes nationally. Within MI, it ranks 980 of 1,153.
Learn more
the frost range covers how to read the range around Onaway's dates instead of trusting one. local microclimates covers what one yard in Onaway can differ from the 49765 normal.