Danville, PA 17822 Frost Dates
Frost dates for Danville, PA, ZIP 17822
Typically, the last spring freeze lands around 04/27, roughly 242 days out. The first fall frost typically arrives around 10/20, about 172 frost-free days later.
Danville 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 Danville has about 8 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.
The actual range around Danville's last frost
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 and you're betting against frost in roughly 9 years out of 10. 05/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Danville compares
About 172 days separate Danville's last and first frost, putting it 28,286 of 40,283 ZIP codes nationally. Within PA, it ranks 1,356 of 2,088.
Learn more
the frost range explains how to read the range around Danville's dates instead of trusting one, and local microclimates explains what one yard in Danville can differ from the 17822 normal.