Granville, OH 43023 Frost Dates
Granville, OH: when does the frost end?
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 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 Granville, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Granville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
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 05/10 and only about 1 year in 10 sees frost after that.
Granville against the rest of the dataset
Granville's growing season runs about 178 days, ranking 25,677 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 845 of 1,383.
Learn more
Before leaning on 43023's figures: local microclimates explains what one yard in Granville can differ from the 43023 normal, while zone vs. frost date explains why Zone 6a and Granville's frost date answer different questions.