Marion Center, PA 15759 Frost Dates
Frost dates for Marion Center, PA, ZIP 15759
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.
The USDA Plant Hardiness Zone Map puts Marion Center in Zone 6a (-10 to -5°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 6a around Marion Center 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.
How much risk comes with planting early here
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 Marion Center compares
Marion Center's growing season runs about 155 days, ranking 34,104 of 40,283 US ZIP codes measured here, longest to shortest. Within PA, it ranks 1,828 of 2,088.
Learn more
zone vs. frost date explains why Zone 6a and Marion Center's frost date answer different questions, and the frost range explains how to read the range around Marion Center's dates instead of trusting one.