Spencerville, OH 45887 Frost Dates
Spencerville, OH: when does the frost end?
Typically, the last spring freeze lands around 04/27, roughly 242 days out. Fall's first freeze usually shows up around 10/19, roughly 175 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Spencerville in Zone 6a (-10 to -5°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 7 weeks until Spencerville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/12 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.
Spencerville against the rest of the dataset
At roughly 175 frost-free days, Spencerville places 26,972 of 40,283 ZIP codes in this dataset. Within OH, it ranks 1,030 of 1,383.
Learn more
Before leaning on 45887's figures: zone vs. frost date explains why Zone 6a and Spencerville's frost date answer different questions, while the frost range explains how to read the range around Spencerville's dates instead of trusting one.