Utah frost dates: P
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Panguitch | Jun 12 | Sep 12 | 92 d | 6a |
| Paradise | May 12 | Sep 28 | 139 d | 6a |
| Paragonah | Jun 21 | Sep 12 | 83 d | 6a |
| Park City | May 29 | Sep 25 | 119 d | 5b |
| Park Valley | May 21 | Oct 2 | 134 d | 6a |
| Parowan | Jun 21 | Sep 12 | 83 d | 6a |
| Payson | May 4 | Oct 11 | 160 d | 6b |
| Peoa | Jun 11 | Sep 12 | 93 d | 5b |
| Pine Valley | Apr 9 | Nov 5 | 210 d | 6b |
| Pleasant Grove | Apr 17 | Oct 25 | 191 d | 7a |
| Plymouth | May 3 | Oct 12 | 162 d | 6a |
| Portage | May 22 | Sep 20 | 121 d | 6a |
| Price | May 3 | Oct 12 | 162 d | 6a |
| Providence | Apr 30 | Oct 16 | 169 d | 6a |
| Provo | Apr 18 | Oct 21 | 186 d | 7a |