Jeannette, PA 15623 Frost Dates
Frost dates for Jeannette, PA, ZIP 15623
Around 04/29 is the usual last spring frost, about 244 days away. The first fall frost typically arrives around 10/20, about 171 frost-free days later.
Zone 6b (-5 to 0°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Jeannette, not a forecast for this year.
What to do before the first frost
Zone 6b around Jeannette 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.
Why 04/29 isn't a guarantee
04/29 is the middle of 30 years of NOAA records, not a promise. Plant by 04/14 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Jeannette compares
About 171 days separate Jeannette's last and first frost, putting it 28,615 of 40,283 ZIP codes nationally. Within PA, it ranks 1,420 of 2,088.
Learn more
zone vs. frost date explains why Zone 6b and Jeannette's frost date answer different questions, and the frost range explains how to read the range around Jeannette's dates instead of trusting one.