Clintonville, PA 16374 Frost Dates
Clintonville, PA: when does the frost end?
Typically, the last spring freeze lands around 05/15, roughly 260 days out. Fall's first freeze usually shows up around 10/03, roughly 140 days after the last spring frost.
Zone 6a (-10 to -5°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 Clintonville, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Clintonville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/15 isn't a guarantee
05/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/01 and only about 1 year in 10 sees frost after that.
Clintonville against the rest of the dataset
About 140 days separate Clintonville's last and first frost, putting it 37,133 of 40,283 ZIP codes nationally. Within PA, it ranks 2,019 of 2,088.
Learn more
Before leaning on 16374's figures: local microclimates explains what one yard in Clintonville can differ from the 16374 normal, while zone vs. frost date explains why Zone 6a and Clintonville's frost date answer different questions.