Blanchester, OH 45107 Frost Dates
Blanchester, OH: when does the frost end?
Typically, the last spring freeze lands around 04/19, roughly 234 days out. Fall's first freeze usually shows up around 10/22, roughly 185 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Blanchester in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 8 weeks until Blanchester's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
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 04/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/06 and only about 1 year in 10 sees frost after that.
Blanchester against the rest of the dataset
Blanchester's growing season runs about 185 days, ranking 23,146 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 559 of 1,383.
Learn more
Before leaning on 45107's figures: zone vs. frost date explains why Zone 6b and Blanchester's frost date answer different questions, while the frost range explains how to read the range around Blanchester's dates instead of trusting one.