Springboro, OH 45066 Frost Dates
Springboro, OH: when does the frost end?
Typically, the last spring freeze lands around 04/17, roughly 232 days out. Fall's first freeze usually shows up around 10/26, roughly 192 days after the last spring frost.
Springboro sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 8 weeks until Springboro's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/17 isn't a guarantee
04/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/03 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.
Springboro against the rest of the dataset
Springboro's growing season runs about 192 days, ranking 20,194 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 215 of 1,383.
Learn more
Before leaning on 45066's figures: the frost range explains how to read the range around Springboro's dates instead of trusting one, while local microclimates explains what one yard in Springboro can differ from the 45066 normal.