St. Clairsville, OH 43927 Frost Dates
Frost dates for St. Clairsville, OH, ZIP 43927
Typically, the last spring freeze lands around 04/20, roughly 235 days out. The first fall frost typically arrives around 10/29, about 192 frost-free days later.
St. Clairsville sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 6b around St. Clairsville has about 9 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 04/20 isn't a guarantee
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 04/05 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How St. Clairsville compares
St. Clairsville's growing season runs about 192 days, ranking 20,282 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 242 of 1,383.
Learn more
zone vs. frost date explains why Zone 6b and St. Clairsville's frost date answer different questions, and the frost range explains how to read the range around St. Clairsville's dates instead of trusting one.