St. Paris, OH 45317 Frost Dates
Frost dates for St. Paris, OH, ZIP 45317
Around 04/27 is the usual last spring frost, about 242 days away. The first fall frost typically arrives around 10/20, about 175 frost-free days later.
The USDA Plant Hardiness Zone Map puts St. Paris 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 St. Paris 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 04/27 isn't a guarantee
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 and you're betting against frost in roughly 9 years out of 10. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How St. Paris compares
About 175 days separate St. Paris's last and first frost, putting it 26,992 of 40,283 ZIP codes nationally. Within OH, it ranks 1,033 of 1,383.
Learn more
zone vs. frost date explains why Zone 6a and St. Paris's frost date answer different questions, and the frost range explains how to read the range around St. Paris's dates instead of trusting one.