Ironton, OH 45638 Frost Dates
When can you plant in Ironton, OH?
Around 04/22 is the usual last spring frost, about 237 days away. The first fall frost typically arrives around 10/23, about 181 frost-free days later.
Zone 7a (0 to 5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Ironton, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in Ironton before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/22 isn't a guarantee
04/22 is the middle of 30 years of NOAA records, not a promise. Plant by 04/06 and you're betting against frost in roughly 9 years out of 10. 05/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Ironton compares
About 181 days separate Ironton's last and first frost, putting it 24,482 of 40,283 ZIP codes nationally. Within OH, it ranks 759 of 1,383.
Learn more
the frost range covers how to read the range around Ironton's dates instead of trusting one. local microclimates covers what one yard in Ironton can differ from the 45638 normal.