Niles, OH 44446 Frost Dates
Frost dates for Niles, OH, ZIP 44446
Around 05/01 is the usual last spring frost, about 246 days away. The first fall frost typically arrives around 10/17, about 167 frost-free days later.
Zone 6a (-10 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 Niles, not a forecast for this year.
What to do before the first frost
Zone 6a around Niles 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.
How much risk comes with planting early here
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 and you're betting against frost in roughly 9 years out of 10. 05/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Niles compares
Niles's growing season runs about 167 days, ranking 29,890 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 1,231 of 1,383.
Learn more
the frost range explains how to read the range around Niles's dates instead of trusting one, and local microclimates explains what one yard in Niles can differ from the 44446 normal.