New Miami, OH 45018 Frost Dates
45018, near New Miami, OH: the frost window
Around 04/22 is the usual last spring frost, about 237 days away. Fall's first freeze usually shows up around 10/18, roughly 178 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 New Miami, not a forecast for this year.
Stretching the season past the first frost
New Miami's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
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 05/10 and only about 1 year in 10 sees frost after that.
New Miami against the rest of the dataset
New Miami's growing season runs about 178 days, ranking 25,751 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 859 of 1,383.
Learn more
Two guides worth reading on 45018: local microclimates, on what one yard in New Miami can differ from the 45018 normal, and zone vs. frost date, on why Zone 6b and New Miami's frost date answer different questions.