Cincinnati, OH 45214 Frost Dates
45214, near Cincinnati, OH: the frost window
The last spring frost here typically falls around 04/16, about 231 days from today. Fall's first freeze usually shows up around 10/25, roughly 190 days after the last spring frost.
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 Cincinnati, not a forecast for this year.
Stretching the season past the first frost
Cincinnati's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/16 isn't a guarantee
04/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/02 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/03 and only about 1 year in 10 sees frost after that.
Cincinnati against the rest of the dataset
At roughly 190 frost-free days, Cincinnati places 20,961 of 40,283 ZIP codes in this dataset. Within OH, it ranks 305 of 1,383.
Learn more
Two guides worth reading on 45214: local microclimates, on what one yard in Cincinnati can differ from the 45214 normal, and zone vs. frost date, on why Zone 6b and Cincinnati's frost date answer different questions.