Harrisville, OH 43937 Frost Dates
When can you plant in Harrisville, OH?
Around 04/20 is the usual last spring frost, about 235 days away. The first fall frost typically arrives around 10/29, about 192 frost-free days later.
The USDA Plant Hardiness Zone Map puts Harrisville in Zone 7a (0 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
About 9 weeks of growing season left in Harrisville before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Harrisville's last frost
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. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Harrisville compares
At roughly 192 frost-free days, Harrisville places 20,585 of 40,283 ZIP codes in this dataset. Within OH, it ranks 276 of 1,383.
Learn more
local microclimates covers what one yard in Harrisville can differ from the 43937 normal. zone vs. frost date covers why Zone 7a and Harrisville's frost date answer different questions.