Ernest, PA 15723 Frost Dates
Frost dates for Ernest, PA, ZIP 15723
Around 05/10 is the usual last spring frost, about 255 days away. The first fall frost typically arrives around 10/12, about 155 frost-free days later.
Ernest 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 Ernest has about 6 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 05/10 isn't a guarantee
05/10 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 and you're betting against frost in roughly 9 years out of 10. 05/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Ernest compares
At roughly 155 frost-free days, Ernest places 34,101 of 40,283 ZIP codes in this dataset. Within PA, it ranks 1,827 of 2,088.
Learn more
the frost range explains how to read the range around Ernest's dates instead of trusting one, and local microclimates explains what one yard in Ernest can differ from the 15723 normal.