Hamilton, OH 45015 Frost Dates
Frost dates for Hamilton, OH, ZIP 45015
The last spring frost here typically falls around 04/22, about 237 days from today. The first fall frost typically arrives around 10/18, about 178 frost-free days later.
Zone 6b (-5 to 0°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Hamilton, not a forecast for this year.
What to do before the first frost
Zone 6b around Hamilton has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Hamilton's last frost
04/22 is the middle of 30 years of NOAA records, not a promise. Plant by 04/06 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hamilton compares
At roughly 178 frost-free days, Hamilton places 25,569 of 40,283 ZIP codes in this dataset. Within OH, it ranks 826 of 1,383.
Learn more
zone vs. frost date explains why Zone 6b and Hamilton's frost date answer different questions, and the frost range explains how to read the range around Hamilton's dates instead of trusting one.