Circleville, OH 43113 Frost Dates
43113, near Circleville, OH: the frost window
Typically, the last spring freeze lands around 04/17, roughly 232 days out. Fall's first freeze usually shows up around 10/28, roughly 192 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 Circleville, not a forecast for this year.
Stretching the season past the first frost
Circleville's growing season runs out in roughly 9 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
04/17 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 05/04 and only about 1 year in 10 sees frost after that.
Circleville against the rest of the dataset
Circleville's growing season runs about 192 days, ranking 20,205 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 216 of 1,383.
Learn more
Two guides worth reading on 43113: local microclimates, on what one yard in Circleville can differ from the 43113 normal, and zone vs. frost date, on why Zone 6b and Circleville's frost date answer different questions.