Ohio frost dates: P
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Painesville | Apr 15 | Nov 9 | 208 d | 6b |
| Palestine | Apr 21 | Oct 20 | 182 d | 6a |
| Pandora | Apr 23 | Oct 22 | 182 d | 6a |
| Paris | May 2 | Oct 13 | 164 d | 6a |
| Parkman | May 1 | Oct 20 | 172 d | 6a |
| Pataskala | Apr 22 | Oct 18 | 179 d | 6a |
| Patriot | Apr 30 | Oct 15 | 168 d | 6b |
| Paulding | Apr 25 | Oct 19 | 177 d | 6a |
| Payne | Apr 25 | Oct 19 | 177 d | 6a |
| Pedro | Apr 30 | Oct 15 | 168 d | 7a |
| Peebles | Apr 21 | Oct 24 | 186 d | 6b |
| Pemberton | Apr 27 | Oct 20 | 176 d | 6a |
| Pemberville | Apr 22 | Oct 25 | 186 d | 6b |
| Peninsula | Apr 30 | Oct 21 | 174 d | 6b |
| Perry | Apr 15 | Nov 9 | 208 d | 6b |
| Perrysburg | Apr 20 | Oct 27 | 190 d | 6b |
| Perrysville | Apr 30 | Oct 15 | 168 d | 6a |
| Petersburg | Apr 30 | Oct 23 | 176 d | 6a |
| Pettisville | Apr 29 | Oct 16 | 170 d | 6a |
| Phillipsburg | Apr 16 | Oct 28 | 195 d | 6a |
| Philo | Apr 19 | Oct 25 | 189 d | 6b |
| Pickerington | Apr 23 | Oct 19 | 179 d | 6b |
| Piedmont | Apr 27 | Oct 22 | 178 d | 6b |
| Pierpont | May 2 | Oct 21 | 172 d | 6a |
| Piketon | Apr 21 | Oct 22 | 184 d | 6b |
| Piney Fork | Apr 21 | Oct 25 | 187 d | 6b |
| Pioneer | Apr 28 | Oct 18 | 173 d | 6a |
| Piqua | Apr 18 | Oct 23 | 188 d | 6a |
| Pitsburg | Apr 21 | Oct 20 | 182 d | 6a |
| Plain City | Apr 19 | Oct 26 | 190 d | 6b |
| Plainfield | Apr 27 | Oct 18 | 174 d | 6b |
| Pleasant City | Apr 28 | Oct 17 | 172 d | 6b |
| Pleasant Hill | Apr 18 | Oct 23 | 188 d | 6a |
| Pleasant Plain | Apr 23 | Oct 18 | 178 d | 6b |
| Pleasantville | Apr 22 | Oct 24 | 185 d | 6a |
| Plymouth | Apr 26 | Oct 22 | 179 d | 6a |
| Polk | Apr 30 | Oct 15 | 168 d | 6a |
| Pomeroy | Apr 27 | Oct 14 | 170 d | 6b |
| Port Clinton | Apr 10 | Nov 5 | 209 d | 6b |
| Port Jefferson | Apr 27 | Oct 20 | 176 d | 6a |
| Port Washington | Apr 29 | Oct 15 | 169 d | 6b |
| Port William | Apr 20 | Oct 20 | 183 d | 6b |
| Portage | Apr 22 | Oct 25 | 186 d | 6b |
| Portland | May 1 | Oct 14 | 166 d | 6b |
| Portsmouth | Apr 17 | Oct 25 | 191 d | 7a |
| Potsdam | Apr 16 | Oct 28 | 195 d | 6a |
| Powell | Apr 22 | Oct 23 | 184 d | 6b |
| Powhatan Point | Apr 26 | Oct 21 | 178 d | 6b |
| Proctorville | Apr 8 | Nov 1 | 207 d | 7a |
| Prospect | Apr 25 | Oct 20 | 178 d | 6a |
| Put In Bay | Apr 10 | Nov 5 | 209 d | 7a |