Mount Healthy, OH 45251 Frost Dates
45251, near Mount Healthy, OH: the frost window
Typically, the last spring freeze lands around 04/19, roughly 234 days out. Fall's first freeze usually shows up around 10/22, roughly 186 days after the last spring frost.
Mount Healthy sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Mount Healthy'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 04/19 isn't a guarantee
04/19 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 05/07 and only about 1 year in 10 sees frost after that.
Mount Healthy against the rest of the dataset
About 186 days separate Mount Healthy's last and first frost, putting it 22,767 of 40,283 ZIP codes nationally. Within OH, it ranks 480 of 1,383.
Learn more
Two guides worth reading on 45251: the frost range, on how to read the range around Mount Healthy's dates instead of trusting one, and local microclimates, on what one yard in Mount Healthy can differ from the 45251 normal.