New Miami, OH 45004 Frost Dates
Frost dates for New Miami, OH, ZIP 45004
The last spring frost here typically falls around 04/22, about 237 days from today. The first fall frost typically arrives around 10/18, about 178 frost-free days later.
The USDA Plant Hardiness Zone Map puts New Miami 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 New Miami has about 7 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 04/22 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. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How New Miami compares
New Miami's growing season runs about 178 days, ranking 25,748 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 856 of 1,383.
Learn more
zone vs. frost date explains why Zone 6b and New Miami's frost date answer different questions, and the frost range explains how to read the range around New Miami's dates instead of trusting one.