Portage, OH 43451 Frost Dates
When can you plant in Portage, OH?
Typically, the last spring freeze lands around 04/24, roughly 239 days out. The first fall frost typically arrives around 10/21, about 179 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 Portage, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in Portage before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Portage's last frost
04/24 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Portage compares
Portage's growing season runs about 179 days, ranking 25,459 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 813 of 1,383.
Learn more
the frost range covers how to read the range around Portage's dates instead of trusting one. local microclimates covers what one yard in Portage can differ from the 43451 normal.