Hamilton, OH 45013 Frost Dates
When can you plant in Hamilton, OH?
The last spring frost here typically falls around 04/19, about 234 days from today. The first fall frost typically arrives around 10/22, about 186 frost-free days later.
The USDA Plant Hardiness Zone Map puts Hamilton 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 8 weeks of growing season left in Hamilton before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/19 isn't a guarantee
04/19 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. 05/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hamilton compares
Hamilton's growing season runs about 186 days, ranking 22,688 of 40,283 US ZIP codes measured here, longest to shortest. Within OH, it ranks 453 of 1,383.
Learn more
the frost range covers how to read the range around Hamilton's dates instead of trusting one. local microclimates covers what one yard in Hamilton can differ from the 45013 normal.