California frost dates: N
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Napa | Feb 12 | Dec 4 | 295 d | 9b |
| National City | rare frost | 10b | ||
| Navarro | Mar 19 | Nov 20 | 246 d | 9b |
| Needles | Jan 6 | Jan 2 | 361 d | 10a |
| Nelson | Jan 29 | Dec 7 | 312 d | 9b |
| Nevada City | Apr 14 | Nov 20 | 220 d | 9a |
| New Almaden | Feb 2 | Dec 6 | 307 d | 9b |
| New Cuyama | Apr 15 | Nov 4 | 203 d | 9a |
| Newark | Jan 7 | Dec 22 | 349 d | 10a |
| Newberry Springs | Feb 19 | Nov 26 | 280 d | 9a |
| Newbury Park | Dec 31 | Dec 28 | 362 d | 10a |
| Newcastle | Feb 25 | Dec 5 | 283 d | 9b |
| Newhall | Jan 8 | Jan 1 | 358 d | 10a |
| Newman | Feb 26 | Nov 29 | 276 d | 9b |
| Newport Beach | rare frost | 10b | ||
| Newport Coast | rare frost | 10b | ||
| Nicasio | Jan 11 | Dec 21 | 344 d | 9b |
| Nice | Apr 10 | Nov 6 | 210 d | 8b |
| Nicolaus | Feb 22 | Nov 24 | 275 d | 9b |
| Niland | Feb 5 | Dec 17 | 315 d | 9b |
| Nipomo | Feb 4 | Dec 13 | 312 d | 9b |
| Nipton | Mar 7 | Nov 29 | 267 d | 8b |
| Norco | Jan 17 | Dec 19 | 336 d | 10a |
| Norden | frost any month | 7a | ||
| North Fork | Apr 24 | Nov 4 | 194 d | 9a |
| North Highlands | Jan 12 | Dec 16 | 338 d | 9b |
| North Hills | Dec 31 | Dec 30 | 364 d | 10a |
| North Hollywood | Jan 2 | Dec 26 | 358 d | 10a |
| North Palm Springs | Jan 1 | Dec 31 | 364 d | 10a |
| North San Juan | Apr 1 | Nov 17 | 230 d | 9a |
| Northridge | Jan 2 | Jan 1 | 364 d | 10a |
| Norwalk | rare frost | 10b | ||
| Novato | Jan 11 | Dec 21 | 344 d | 9b |
| Nubieber | May 28 | Sep 29 | 124 d | 7a |
| Nuevo | Jan 31 | Dec 10 | 313 d | 9b |