Etna, PA 15223 Frost Dates
Frost dates for Etna, PA, ZIP 15223
Around 04/18 is the usual last spring frost, about 233 days away. The first fall frost typically arrives around 10/28, about 193 frost-free days later.
Etna 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.
What to do before the first frost
Zone 6b around Etna has about 9 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 04/18 isn't a guarantee
04/18 is the middle of 30 years of NOAA records, not a promise. Plant by 04/02 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Etna compares
About 193 days separate Etna's last and first frost, putting it 19,923 of 40,283 ZIP codes nationally. Within PA, it ranks 469 of 2,088.
Learn more
local microclimates explains what one yard in Etna can differ from the 15223 normal, and zone vs. frost date explains why Zone 6b and Etna's frost date answer different questions.