Colorado frost dates: P
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Padroni | Apr 30 | Oct 9 | 162 d | 5b |
| Pagosa Springs | Jun 9 | Sep 22 | 105 d | 5b |
| Palisade | Apr 17 | Oct 26 | 192 d | 7a |
| Palmer Lake | May 14 | Oct 1 | 140 d | 5b |
| Paoli | May 11 | Oct 3 | 145 d | 5b |
| Paonia | May 3 | Oct 12 | 162 d | 6b |
| Parachute | May 17 | Sep 30 | 136 d | 6a |
| Paradox | May 11 | Oct 5 | 147 d | 6b |
| Parker | May 9 | Oct 3 | 147 d | 5b |
| Parlin | Jun 21 | Sep 5 | 76 d | 4b |
| Parshall | Jun 12 | Sep 10 | 90 d | 5a |
| Peetz | May 15 | Sep 30 | 138 d | 5b |
| Penrose | May 4 | Oct 7 | 156 d | 6a |
| Peyton | May 9 | Oct 6 | 150 d | 5b |
| Phippsburg | Jun 14 | Sep 11 | 89 d | 5a |
| Pierce | May 13 | Sep 27 | 137 d | 5b |
| Pine | Jun 16 | Sep 8 | 84 d | 5b |
| Pinecliffe | Jun 5 | Sep 16 | 103 d | 5b |
| Pitkin | Jun 20 | Sep 8 | 80 d | 5a |
| Placerville | May 26 | Sep 29 | 126 d | 5b |
| Platteville | May 2 | Oct 8 | 159 d | 5b |
| Pleasant View | May 17 | Oct 9 | 145 d | 6b |
| Poncha Springs | May 29 | Sep 20 | 114 d | 6a |
| Powderhorn | Jun 9 | Sep 16 | 99 d | 5b |
| Pritchett | May 3 | Oct 10 | 160 d | 6b |
| Pueblo | Apr 30 | Oct 9 | 162 d | 6a |