Bruin, PA 16022 Frost Dates
Frost dates for Bruin, PA, ZIP 16022
Around 05/10 is the usual last spring frost, about 255 days away. The first fall frost typically arrives around 10/12, about 155 frost-free days later.
Zone 6a (-10 to -5°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 Bruin, not a forecast for this year.
What to do before the first frost
Zone 6a around Bruin has about 6 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 05/10 isn't a guarantee
05/10 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 and you're betting against frost in roughly 9 years out of 10. 05/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bruin compares
About 155 days separate Bruin's last and first frost, putting it 34,106 of 40,283 ZIP codes nationally. Within PA, it ranks 1,830 of 2,088.
Learn more
zone vs. frost date explains why Zone 6a and Bruin's frost date answer different questions, and the frost range explains how to read the range around Bruin's dates instead of trusting one.