Etna, PA 15116 Frost Dates
Etna, PA: when does the frost end?
Typically, the last spring freeze lands around 04/18, roughly 233 days out. Fall's first freeze usually shows up around 10/28, roughly 193 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Etna in Zone 6b (-5 to 0°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 9 weeks until Etna'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
04/18 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/02 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.
Etna against the rest of the dataset
About 193 days separate Etna's last and first frost, putting it 19,922 of 40,283 ZIP codes nationally. Within PA, it ranks 468 of 2,088.
Learn more
Before leaning on 15116's figures: local microclimates explains what one yard in Etna can differ from the 15116 normal, while zone vs. frost date explains why Zone 6b and Etna's frost date answer different questions.