Utah frost dates: N
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Neola | May 19 | Sep 29 | 133 d | 6a |
| Nephi | May 6 | Oct 10 | 157 d | 6a |
| New Harmony | May 9 | Oct 11 | 155 d | 7a |
| Newcastle | May 31 | Sep 20 | 112 d | 5b |
| Newton | May 3 | Oct 12 | 162 d | 6a |
| North Salt Lake | Apr 24 | Oct 19 | 178 d | 7b |