Waynesburg, PA 15370 Frost Dates
Frost dates for Waynesburg, PA, ZIP 15370
Typically, the last spring freeze lands around 05/03, roughly 248 days out. The first fall frost typically arrives around 10/15, about 164 frost-free days later.
The USDA Plant Hardiness Zone Map puts Waynesburg in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 6b around Waynesburg has about 7 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 05/03 isn't a guarantee
05/03 is the middle of 30 years of NOAA records, not a promise. Plant by 04/19 and you're betting against frost in roughly 9 years out of 10. 05/21 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Waynesburg compares
About 164 days separate Waynesburg's last and first frost, putting it 30,932 of 40,283 ZIP codes nationally. Within PA, it ranks 1,573 of 2,088.
Learn more
local microclimates explains what one yard in Waynesburg can differ from the 15370 normal, and zone vs. frost date explains why Zone 6b and Waynesburg's frost date answer different questions.