Arcanum, OH 45304 Frost Dates
Frost dates for Arcanum, OH, ZIP 45304
Typically, the last spring freeze lands around 04/21, roughly 236 days out. The first fall frost typically arrives around 10/20, about 180 frost-free days later.
Zone 6a (-10 to -5°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 Arcanum, not a forecast for this year.
What to do before the first frost
Zone 6a around Arcanum has about 8 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Arcanum'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. 05/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Arcanum compares
At roughly 180 frost-free days, Arcanum places 24,885 of 40,283 ZIP codes in this dataset. Within OH, it ranks 789 of 1,383.
Learn more
local microclimates explains what one yard in Arcanum can differ from the 45304 normal, and zone vs. frost date explains why Zone 6a and Arcanum's frost date answer different questions.