Sinking Spring, PA 19608 Frost Dates
Frost dates for Sinking Spring, PA, ZIP 19608
Around 04/14 is the usual last spring frost, about 229 days away. The first fall frost typically arrives around 10/29, about 197 frost-free days later.
Sinking Spring sits in USDA Zone 7a (0 to 5°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 7a around Sinking Spring 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.
How much risk comes with planting early here
04/14 is the middle of 30 years of NOAA records, not a promise. Plant by 04/01 and you're betting against frost in roughly 9 years out of 10. 04/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sinking Spring compares
About 197 days separate Sinking Spring's last and first frost, putting it 18,675 of 40,283 ZIP codes nationally. Within PA, it ranks 363 of 2,088.
Learn more
the frost range explains how to read the range around Sinking Spring's dates instead of trusting one, and local microclimates explains what one yard in Sinking Spring can differ from the 19608 normal.