Charleroi, PA 15022 Frost Dates
Frost dates for Charleroi, PA, ZIP 15022
Typically, the last spring freeze lands around 05/02, roughly 247 days out. The first fall frost typically arrives around 10/20, about 170 frost-free days later.
Charleroi 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 Charleroi 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 Charleroi's last frost
05/02 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Charleroi compares
Charleroi's growing season runs about 170 days, ranking 29,000 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,469 of 2,088.
Learn more
zone vs. frost date explains why Zone 6b and Charleroi's frost date answer different questions, and the frost range explains how to read the range around Charleroi's dates instead of trusting one.