Waterville, OH 43566 Frost Dates
Frost dates for Waterville, OH, ZIP 43566
Around 04/22 is the usual last spring frost, about 237 days away. The first fall frost typically arrives around 10/24, about 188 frost-free days later.
Zone 6b (-5 to 0°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 Waterville, not a forecast for this year.
What to do before the first frost
Zone 6b around Waterville 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 04/22 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. 05/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Waterville compares
Waterville's growing season runs about 188 days, ranking 21,979 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 377 of 1,383.
Learn more
zone vs. frost date explains why Zone 6b and Waterville's frost date answer different questions, and the frost range explains how to read the range around Waterville's dates instead of trusting one.