California frost dates: P
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Pacific Grove | Jan 1 | Dec 30 | 363 d | 10a |
| Pacific Palisades | rare frost | 10b | ||
| Pacifica | Jan 11 | Jan 10 | 364 d | 10a |
| Pacoima | Dec 31 | Dec 30 | 364 d | 10a |
| Paicines | Apr 23 | Nov 3 | 194 d | 9a |
| Pala | Feb 2 | Jan 30 | 362 d | 10a |
| Palermo | Jan 29 | Dec 7 | 312 d | 9b |
| Palm Desert | Dec 31 | Dec 27 | 361 d | 10a |
| Palm Springs | Jan 1 | Dec 31 | 364 d | 10a |
| Palmdale | Mar 10 | Nov 19 | 254 d | 8b |
| Palo Alto | Feb 1 | Dec 7 | 309 d | 9b |
| Palo Cedro | Mar 3 | Nov 21 | 263 d | 9a |
| Palo Verde | Jan 5 | Dec 21 | 350 d | 10a |
| Palomar Mountain | Apr 29 | Nov 18 | 203 d | 9a |
| Palos Verdes Peninsula | Jan 9 | Jan 5 | 361 d | 10b |
| Panorama City | Dec 31 | Dec 30 | 364 d | 10a |
| Paradise | Feb 7 | Dec 18 | 314 d | 9b |
| Paramount | rare frost | 10b | ||
| Parker Dam | Jan 7 | Dec 31 | 358 d | 10a |
| Parlier | Jan 30 | Dec 11 | 315 d | 9b |
| Pasadena | Jan 8 | Jan 7 | 364 d | 10a |
| Paskenta | Apr 5 | Nov 13 | 222 d | 9b |
| Paso Robles | Apr 4 | Nov 5 | 215 d | 9a |
| Patterson | Jan 31 | Dec 5 | 308 d | 9b |
| Patton | Jan 27 | Dec 19 | 326 d | 10a |
| Pauma Valley | Feb 19 | Dec 1 | 285 d | 9b |
| Paynes Creek | Jun 10 | Sep 13 | 95 d | 9b |
| Pearblossom | Mar 13 | Dec 1 | 263 d | 8b |
| Pebble Beach | Jan 1 | Dec 30 | 363 d | 10a |
| Penn Valley | Apr 10 | Nov 13 | 217 d | 9b |
| Penngrove | Feb 28 | Nov 25 | 270 d | 9b |
| Penryn | Feb 25 | Dec 5 | 283 d | 9b |
| Perris | rare frost | 9b | ||
| Pescadero | Mar 2 | Nov 25 | 268 d | 9b |
| Petaluma | Feb 28 | Nov 25 | 270 d | 9a |
| Petrolia | Feb 1 | Dec 19 | 321 d | 9b |
| Phelan | May 16 | Oct 13 | 150 d | 8b |
| Phillipsville | Mar 10 | Dec 1 | 266 d | 9a |
| Philo | Mar 5 | Nov 21 | 261 d | 9b |
| Pico Rivera | Jan 4 | Jan 2 | 363 d | 10b |
| Piedmont | rare frost | 10a | ||
| Piedra | Feb 23 | Dec 12 | 292 d | 9b |
| Piercy | Mar 10 | Dec 1 | 266 d | 9a |
| Pilot Hill | Feb 25 | Dec 5 | 283 d | 9b |
| Pine Grove | Mar 4 | Dec 11 | 282 d | 9a |
| Pine Mountain Club | Apr 15 | Nov 26 | 225 d | 8b |
| Pine Valley | Apr 22 | Nov 8 | 200 d | 8b |
| Pinecrest | May 2 | Nov 4 | 186 d | 6b |
| Pinole | Jan 4 | Jan 2 | 363 d | 9b |
| Pinon Hills | May 16 | Oct 13 | 150 d | 8b |
| Pioneer | Mar 4 | Dec 11 | 282 d | 9a |
| Pioneertown | Feb 16 | Dec 10 | 297 d | 9a |
| Piru | Jan 8 | Jan 1 | 358 d | 8b |
| Pismo Beach | Feb 1 | Jan 4 | 337 d | 10a |
| Pittsburg | Jan 9 | Dec 14 | 339 d | 9b |
| Pixley | Jan 31 | Dec 8 | 311 d | 9a |
| Placentia | rare frost | 10b | ||
| Placerville | Mar 31 | Nov 21 | 235 d | 9b |
| Planada | Feb 26 | Nov 25 | 272 d | 9a |
| Platina | May 3 | Oct 11 | 161 d | 9a |
| Playa Del Rey | rare frost | 11a | ||
| Playa Vista | rare frost | 10b | ||
| Pleasant Grove | Feb 22 | Nov 24 | 275 d | 9b |
| Pleasant Hill | Jan 7 | Dec 19 | 346 d | 9b |
| Pleasanton | Feb 15 | Dec 2 | 290 d | 9b |
| Plymouth | Mar 4 | Dec 11 | 282 d | 9b |
| Point Arena | Mar 5 | Nov 21 | 261 d | 9b |
| Point Mugu Nawc | Dec 29 | Dec 24 | 360 d | 10b |
| Point Reyes Station | Jan 11 | Dec 21 | 344 d | 9b |
| Pollock Pines | Apr 26 | Nov 2 | 190 d | 8b |
| Pomona | Jan 8 | Dec 28 | 354 d | 10a |
| Pope Valley | Apr 7 | Dec 5 | 242 d | 9a |
| Port Costa | Jan 17 | Dec 27 | 344 d | 9b |
| Port Hueneme | rare frost | 10b | ||
| Port Hueneme Cbc Base | rare frost | 10b | ||
| Porter Ranch | Jan 2 | Jan 1 | 364 d | 10a |
| Porterville | Jan 20 | Dec 13 | 327 d | 9b |
| Portola | Jun 11 | Sep 10 | 91 d | 6b |
| Portola Valley | Mar 21 | Dec 15 | 269 d | 9b |
| Posey | May 11 | Oct 17 | 159 d | 9a |
| Potrero | Apr 30 | Oct 26 | 179 d | 9a |
| Potter Valley | Apr 8 | Nov 6 | 212 d | 9a |
| Poway | Jan 5 | Jan 2 | 362 d | 10a |
| Prather | Mar 25 | Dec 3 | 253 d | 9a |
| Princeton | Feb 21 | Dec 6 | 288 d | 9b |
| Proberta | Feb 22 | Nov 29 | 280 d | 9a |