Unionville Center, OH 43077 Frost Dates
43077, near Unionville Center, OH: the frost window
The last spring frost here typically falls around 04/22, about 237 days from today. Fall's first freeze usually shows up around 10/23, roughly 183 days after the last spring frost.
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 Unionville Center, not a forecast for this year.
Stretching the season past the first frost
Unionville Center'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 04/22 isn't a guarantee
04/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/09 and only about 1 year in 10 sees frost after that.
Unionville Center against the rest of the dataset
About 183 days separate Unionville Center's last and first frost, putting it 24,022 of 40,283 ZIP codes nationally. Within OH, it ranks 715 of 1,383.
Learn more
Two guides worth reading on 43077: the frost range, on how to read the range around Unionville Center's dates instead of trusting one, and local microclimates, on what one yard in Unionville Center can differ from the 43077 normal.