Whitehall, OH 43227 Frost Dates
43227, near Whitehall, OH: the frost window
Around 04/23 is the usual last spring frost, about 238 days away. Fall's first freeze usually shows up around 10/19, roughly 177 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 Whitehall, not a forecast for this year.
Stretching the season past the first frost
Whitehall'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.
Why 04/23 isn't a guarantee
04/23 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/08 and only about 1 year in 10 sees frost after that.
Whitehall against the rest of the dataset
About 177 days separate Whitehall's last and first frost, putting it 26,046 of 40,283 ZIP codes nationally. Within OH, it ranks 913 of 1,383.
Learn more
Two guides worth reading on 43227: local microclimates, on what one yard in Whitehall can differ from the 43227 normal, and zone vs. frost date, on why Zone 6b and Whitehall's frost date answer different questions.