Martinsville, OH 45114 Frost Dates
Frost dates for Martinsville, OH, ZIP 45114
Typically, the last spring freeze lands around 04/19, roughly 234 days out. The first fall frost typically arrives around 10/22, about 185 frost-free days later.
Martinsville 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 Martinsville 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.
How much risk comes with planting early here
04/19 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 Martinsville compares
About 185 days separate Martinsville's last and first frost, putting it 23,299 of 40,283 ZIP codes nationally. Within OH, it ranks 582 of 1,383.
Learn more
zone vs. frost date explains why Zone 6b and Martinsville's frost date answer different questions, and the frost range explains how to read the range around Martinsville's dates instead of trusting one.