Utah frost dates: K
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Kamas | Jun 5 | Sep 17 | 104 d | 5b |
| Kanab | Apr 29 | Oct 22 | 176 d | 7a |
| Kanarraville | May 9 | Oct 11 | 155 d | 6b |
| Kanosh | Apr 30 | Oct 19 | 172 d | 6b |
| Kaysville | Apr 19 | Oct 19 | 183 d | 7b |
| Kenilworth | May 3 | Oct 12 | 162 d | 6b |
| Kingston | May 23 | Sep 27 | 127 d | 5b |
| Koosharem | Jun 6 | Sep 21 | 107 d | 6a |