Wilmington, OH 45177 Frost Dates
Wilmington, 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.
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 Wilmington, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Wilmington'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.
Wilmington against the rest of the dataset
About 185 days separate Wilmington's last and first frost, putting it 23,087 of 40,283 ZIP codes nationally. Within OH, it ranks 537 of 1,383.
Learn more
Before leaning on 45177's figures: the frost range explains how to read the range around Wilmington's dates instead of trusting one, while local microclimates explains what one yard in Wilmington can differ from the 45177 normal.