Plymouth, OH 44865 Frost Dates
Frost dates for Plymouth, OH, ZIP 44865
Around 04/26 is the usual last spring frost, about 241 days away. The first fall frost typically arrives around 10/22, about 177 frost-free days later.
The USDA Plant Hardiness Zone Map puts Plymouth in Zone 6a (-10 to -5°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 6a around Plymouth 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.
Why 04/26 isn't a guarantee
04/26 is the middle of 30 years of NOAA records, not a promise. Plant by 04/14 and you're betting against frost in roughly 9 years out of 10. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Plymouth compares
At roughly 177 frost-free days, Plymouth places 26,157 of 40,283 ZIP codes in this dataset. Within OH, it ranks 931 of 1,383.
Learn more
local microclimates explains what one yard in Plymouth can differ from the 44865 normal, and zone vs. frost date explains why Zone 6a and Plymouth's frost date answer different questions.