Dennison, OH 44621 Frost Dates
When can you plant in Dennison, OH?
Typically, the last spring freeze lands around 04/26, roughly 241 days out. The first fall frost typically arrives around 10/21, about 176 frost-free days later.
Dennison 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 8 weeks of growing season left in Dennison before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Dennison's last frost
04/26 is the middle of 30 years of NOAA records, not a promise. Plant by 04/14 and you're betting against frost in roughly 9 years out of 10. 05/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dennison compares
About 176 days separate Dennison's last and first frost, putting it 26,469 of 40,283 ZIP codes nationally. Within OH, it ranks 976 of 1,383.
Learn more
the frost range covers how to read the range around Dennison's dates instead of trusting one. local microclimates covers what one yard in Dennison can differ from the 44621 normal.