Parma, OH 44129 Frost Dates
When can you plant in Parma, OH?
Around 04/20 is the usual last spring frost, about 235 days away. The first fall frost typically arrives around 11/03, about 198 frost-free days later.
The USDA Plant Hardiness Zone Map puts Parma in Zone 6b (-5 to 0°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 10 weeks of growing season left in Parma before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Parma's last frost
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Parma compares
Parma's growing season runs about 198 days, ranking 18,260 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 76 of 1,383.
Learn more
zone vs. frost date covers why Zone 6b and Parma's frost date answer different questions. the frost range covers how to read the range around Parma's dates instead of trusting one.