Arizona frost dates: L
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Lake Havasu City | Jan 5 | Dec 29 | 358 d | 10a |
| Lake Montezuma | Apr 16 | Oct 30 | 197 d | 8a |
| Lakeside | May 22 | Oct 6 | 137 d | 6b |
| Laveen | Jan 14 | Dec 22 | 342 d | 9b |
| Leupp | Apr 14 | Oct 25 | 194 d | 7a |
| Litchfield Park | Jan 7 | Dec 24 | 351 d | 9b |
| Littlefield | Mar 7 | Nov 19 | 257 d | 8b |
| Lukachukai | May 3 | Oct 17 | 167 d | 7a |
| Luke Air Force Base | Jan 20 | Dec 15 | 329 d | 9b |
| Lukeville | Feb 4 | Dec 15 | 314 d | 9b |
| Lupton | May 22 | Oct 8 | 139 d | 6b |