Connecticut frost dates: P
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Pawcatuck | Apr 11 | Oct 31 | 203 d | 7a |
| Pequabuck | Apr 25 | Oct 18 | 176 d | 6b |
| Pine Meadow | Apr 30 | Oct 17 | 170 d | 6a |
| Plainfield | Apr 30 | Oct 15 | 168 d | 6b |
| Plainville | Apr 25 | Oct 18 | 176 d | 6b |
| Plantsville | Apr 26 | Oct 16 | 173 d | 6b |
| Plymouth | Apr 25 | Oct 18 | 176 d | 6a |
| Pomfret | May 1 | Oct 9 | 161 d | 6b |
| Pomfret Center | May 1 | Oct 9 | 161 d | 6b |
| Poquonock | Apr 21 | Oct 16 | 178 d | 6b |
| Portland | Apr 17 | Oct 26 | 192 d | 6b |
| Preston | Apr 14 | Oct 24 | 193 d | 6b |
| Prospect | Apr 18 | Oct 26 | 191 d | 6b |
| Putnam | May 1 | Oct 9 | 161 d | 6b |