Arizona frost dates: S
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Sacaton | Feb 1 | Dec 11 | 313 d | 9a |
| Safford | Mar 25 | Nov 9 | 229 d | 8b |
| Sahuarita | Feb 25 | Nov 27 | 275 d | 9a |
| Saint David | Apr 12 | Nov 1 | 203 d | 8b |
| Saint Johns | May 3 | Oct 10 | 160 d | 6b |
| Saint Michaels | May 29 | Sep 28 | 122 d | 6a |
| Salome | Mar 17 | Nov 19 | 247 d | 9a |
| San Carlos | Mar 13 | Nov 19 | 251 d | 9a |
| San Luis | rare frost | 10a | ||
| San Manuel | Feb 4 | Dec 8 | 307 d | 9a |
| San Simon | Apr 21 | Oct 27 | 189 d | 8a |
| San Tan Valley | Feb 1 | Dec 11 | 313 d | 9b |
| Sanders | May 22 | Oct 8 | 139 d | 6b |
| Sasabe | Mar 21 | Nov 20 | 244 d | 8b |
| Scottsdale | Jan 6 | Dec 26 | 354 d | 10a |
| Second Mesa | May 16 | Oct 10 | 147 d | 7a |
| Sedona | Apr 1 | Nov 17 | 230 d | 8b |
| Sedona (Yavapai) | Apr 20 | Oct 27 | 190 d | 8b |
| Seligman | May 10 | Oct 15 | 158 d | 7a |
| Sells | Apr 26 | Nov 4 | 192 d | 9a |
| Shonto | May 7 | Oct 15 | 161 d | 7a |
| Show Low | May 5 | Oct 15 | 163 d | 7a |
| Sierra Vista | Apr 5 | Nov 9 | 218 d | 8b |
| Skull Valley | Apr 30 | Oct 20 | 173 d | 8a |
| Snowflake | May 11 | Oct 10 | 152 d | 7a |
| Solomon | Mar 25 | Nov 9 | 229 d | 8b |
| Somerton | rare frost | 10a | ||
| Sonoita | Mar 28 | Nov 21 | 238 d | 8a |
| Springerville | Jun 1 | Sep 26 | 117 d | 6b |
| Stanfield | Feb 5 | Dec 6 | 304 d | 9a |
| Sun City | Jan 20 | Dec 15 | 329 d | 9b |
| Sun City West | Jan 20 | Dec 15 | 329 d | 9b |
| Sun Valley | Apr 22 | Oct 24 | 185 d | 7a |
| Supai | Jun 1 | Oct 3 | 124 d | 7a |
| Superior | Jan 18 | Dec 28 | 344 d | 9b |
| Surprise | Jan 20 | Dec 15 | 329 d | 9b |