Springboro, PA 16435 Frost Dates
Springboro, PA: when does the frost end?
Around 05/08 is the usual last spring frost, about 253 days away. Fall's first freeze usually shows up around 10/16, roughly 160 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Springboro 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 Springboro's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/08 isn't a guarantee
05/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/23 and only about 1 year in 10 sees frost after that.
Springboro against the rest of the dataset
At roughly 160 frost-free days, Springboro places 32,504 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,722 of 2,088.
Learn more
Before leaning on 16435's figures: local microclimates explains what one yard in Springboro can differ from the 16435 normal, while zone vs. frost date explains why Zone 6a and Springboro's frost date answer different questions.