St. Bernard, OH 45273 Frost Dates
When can you plant in St. Bernard, OH?
Typically, the last spring freeze lands around 04/16, roughly 231 days out. The first fall frost typically arrives around 10/28, about 193 frost-free days later.
St. Bernard sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 9 weeks of growing season left in St. Bernard before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/16 isn't a guarantee
04/16 is the middle of 30 years of NOAA records, not a promise. Plant by 04/02 and you're betting against frost in roughly 9 years out of 10. 05/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How St. Bernard compares
St. Bernard's growing season runs about 193 days, ranking 19,909 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 196 of 1,383.
Learn more
zone vs. frost date covers why Zone 6b and St. Bernard's frost date answer different questions. the frost range covers how to read the range around St. Bernard's dates instead of trusting one.