Clark, PA 16154 Frost Dates
Clark, PA: when does the frost end?
Around 05/15 is the usual last spring frost, about 260 days away. Fall's first freeze usually shows up around 10/03, roughly 140 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Clark 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 5 weeks until Clark'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
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.
Clark against the rest of the dataset
About 140 days separate Clark's last and first frost, putting it 37,127 of 40,283 ZIP codes nationally. Within PA, it ranks 2,016 of 2,088.
Learn more
Before leaning on 16154's figures: local microclimates explains what one yard in Clark can differ from the 16154 normal, while zone vs. frost date explains why Zone 6a and Clark's frost date answer different questions.