Mentor, OH 44060 Frost Dates
When can you plant in Mentor, OH?
Typically, the last spring freeze lands around 04/26, roughly 241 days out. The first fall frost typically arrives around 10/31, about 184 frost-free days later.
The USDA Plant Hardiness Zone Map puts Mentor 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 Mentor before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/26 is the middle of 30 years of NOAA records, not a promise. Plant by 04/11 and you're betting against frost in roughly 9 years out of 10. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Mentor compares
At roughly 184 frost-free days, Mentor places 23,423 of 40,283 ZIP codes in this dataset. Within OH, it ranks 606 of 1,383.
Learn more
zone vs. frost date covers why Zone 7a and Mentor's frost date answer different questions. the frost range covers how to read the range around Mentor's dates instead of trusting one.