Clay Center, OH 43445 Frost Dates
Frost dates for Clay Center, OH, ZIP 43445
The last spring frost here typically falls around 04/20, about 235 days from today. The first fall frost typically arrives around 10/27, about 188 frost-free days later.
The USDA Plant Hardiness Zone Map puts Clay Center 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 Clay Center 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. 05/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Clay Center compares
Clay Center's growing season runs about 188 days, ranking 22,207 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 414 of 1,383.
Learn more
the frost range explains how to read the range around Clay Center's dates instead of trusting one, and local microclimates explains what one yard in Clay Center can differ from the 43445 normal.