South Dakota frost dates: P
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Parker | Apr 30 | Oct 7 | 160 d | 5a |
| Parkston | May 8 | Sep 29 | 144 d | 5a |
| Parmelee | May 11 | Oct 1 | 143 d | 5a |
| Peever | May 9 | Sep 28 | 142 d | 4b |
| Philip | May 11 | Sep 30 | 142 d | 5a |
| Pickstown | Apr 30 | Oct 13 | 166 d | 5b |
| Piedmont | May 10 | Oct 5 | 148 d | 5a |
| Pierpont | May 6 | Oct 4 | 151 d | 4b |
| Pierre | May 6 | Oct 3 | 150 d | 4b |
| Pine Ridge | May 16 | Sep 27 | 134 d | 5a |
| Plankinton | May 3 | Oct 5 | 155 d | 5a |
| Platte | Apr 30 | Oct 8 | 161 d | 5a |
| Pollock | May 8 | Sep 30 | 145 d | 4a |
| Porcupine | May 9 | Oct 4 | 148 d | 5a |
| Prairie City | May 30 | Sep 11 | 104 d | 4b |
| Presho | May 12 | Sep 29 | 140 d | 5a |
| Pringle | May 15 | Sep 29 | 137 d | 5b |
| Pukwana | May 1 | Oct 7 | 159 d | 5a |