Cincinnati, OH 45219 Frost Dates
Frost dates for Cincinnati, OH, ZIP 45219
The last spring frost here typically falls around 04/16, about 231 days from today. The first fall frost typically arrives around 10/25, about 190 frost-free days later.
The USDA Plant Hardiness Zone Map puts Cincinnati in Zone 6b (-5 to 0°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
Zone 6b around Cincinnati 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.
How much risk comes with planting early here
04/16 is the middle of 30 years of NOAA records, not a promise. Plant by 04/02 and you're betting against frost in roughly 9 years out of 10. 05/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Cincinnati compares
About 190 days separate Cincinnati's last and first frost, putting it 20,962 of 40,283 ZIP codes nationally. Within OH, it ranks 306 of 1,383.
Learn more
zone vs. frost date explains why Zone 6b and Cincinnati's frost date answer different questions, and the frost range explains how to read the range around Cincinnati's dates instead of trusting one.