Frost dates across Ohio
Typical last spring frost, first fall frost, and USDA zone for 12 Ohio cities, from 30-year NOAA climate normals. Every date is a 50 percent odds line, not a promise. Pick a city for the full frost window and what is plantable there now.
Not on the list? Any Ohio ZIP works.
| City | Last spring frost | First fall frost | Season length | Zone |
|---|---|---|---|---|
| Columbus | Apr 20 | Oct 24 | about 187 days | 6b |
| Cleveland | Apr 8 | Nov 12 | about 218 days | 7a |
| Cincinnati | Apr 17 | Oct 26 | about 192 days | 6b |
| Toledo | Apr 20 | Oct 27 | about 190 days | 6b |
| Akron | Apr 24 | Oct 28 | about 187 days | 6b |
| Dayton | Apr 18 | Oct 25 | about 190 days | 6b |
| Mansfield | Apr 26 | Oct 22 | about 179 days | 6a |
| Lima | Apr 24 | Oct 24 | about 183 days | 6a |
| Zanesville | Apr 26 | Oct 19 | about 176 days | 6b |
| Portsmouth | Apr 17 | Oct 25 | about 191 days | 7a |
| Steubenville | Apr 29 | Oct 20 | about 174 days | 6b |
| Ashtabula | May 2 | Oct 21 | about 172 days | 6b |
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