Utah frost dates: T
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Tabiona | Jun 11 | Sep 18 | 99 d | 6a |
| Talmage | May 31 | Sep 23 | 115 d | 6a |
| Teasdale | Apr 22 | Oct 23 | 184 d | 6a |
| Thompson | Apr 22 | Oct 20 | 181 d | 6b |
| Tooele | May 2 | Oct 16 | 167 d | 7a |
| Toquerville | Apr 1 | Nov 5 | 218 d | 8b |
| Torrey | Apr 22 | Oct 23 | 184 d | 7a |
| Tremonton | Apr 24 | Oct 17 | 176 d | 6b |
| Trenton | May 17 | Sep 18 | 124 d | 5b |
| Tridell | May 19 | Oct 2 | 136 d | 5b |
| Tropic | May 23 | Sep 27 | 127 d | 6a |