Marianna, PA 15345 Frost Dates
Frost dates for Marianna, PA, ZIP 15345
The last spring frost here typically falls around 05/03, about 248 days from today. The first fall frost typically arrives around 10/15, about 164 frost-free days later.
The USDA Plant Hardiness Zone Map puts Marianna 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 Marianna 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.
How much risk comes with planting early here
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 Marianna compares
About 164 days separate Marianna's last and first frost, putting it 31,150 of 40,283 ZIP codes nationally. Within PA, it ranks 1,612 of 2,088.
Learn more
local microclimates explains what one yard in Marianna can differ from the 15345 normal, and zone vs. frost date explains why Zone 6b and Marianna's frost date answer different questions.