New Mexico frost dates: B
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Bard | Apr 18 | Oct 24 | 189 d | 7a |
| Bayard | Apr 4 | Nov 8 | 218 d | 7b |
| Belen | Apr 23 | Oct 21 | 181 d | 7b |
| Bent | Apr 5 | Nov 4 | 213 d | 7b |
| Berino | Feb 28 | Nov 20 | 265 d | 8b |
| Bernalillo | Apr 16 | Oct 23 | 190 d | 7b |
| Blanco | Apr 23 | Oct 19 | 179 d | 6b |
| Bloomfield | Apr 23 | Oct 19 | 179 d | 7a |
| Bluewater | May 17 | Oct 3 | 139 d | 6a |
| Bosque | Apr 29 | Oct 14 | 168 d | 7b |
| Bosque Farms | Apr 23 | Oct 21 | 181 d | 7b |
| Brimhall | May 11 | Oct 7 | 149 d | 6b |
| Broadview | Apr 20 | Oct 24 | 187 d | 7a |
| Buckhorn | May 9 | Oct 15 | 159 d | 7b |
| Buena Vista | May 28 | Sep 26 | 121 d | 6a |