Eldorado, OH 45321 Frost Dates
When can you plant in Eldorado, OH?
The last spring frost here typically falls around 04/25, about 240 days from today. The first fall frost typically arrives around 10/20, about 176 frost-free days later.
The USDA Plant Hardiness Zone Map puts Eldorado 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 8 weeks of growing season left in Eldorado before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/25 isn't a guarantee
04/25 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 Eldorado compares
About 176 days separate Eldorado's last and first frost, putting it 26,604 of 40,283 ZIP codes nationally. Within OH, it ranks 990 of 1,383.
Learn more
local microclimates covers what one yard in Eldorado can differ from the 45321 normal. zone vs. frost date covers why Zone 6a and Eldorado's frost date answer different questions.