New Mexico frost dates: M
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Magdalena | Apr 16 | Oct 25 | 192 d | 7a |
| Malaga | Mar 17 | Nov 12 | 240 d | 8a |
| Maljamar | Mar 28 | Nov 13 | 230 d | 8a |
| Maxwell | May 17 | Oct 1 | 137 d | 6a |
| Mayhill | May 7 | Oct 11 | 157 d | 7a |
| Mcalister | Apr 24 | Oct 21 | 180 d | 7a |
| Mcdonald | Apr 19 | Oct 26 | 190 d | 7b |
| Mcintosh | May 18 | Oct 1 | 136 d | 6a |
| Medanales | May 10 | Oct 4 | 147 d | 7a |
| Melrose | Apr 17 | Oct 26 | 192 d | 7a |
| Mentmore | May 31 | Sep 28 | 120 d | 6a |
| Mescalero | May 11 | Oct 5 | 147 d | 7a |
| Mesilla | Mar 12 | Nov 13 | 246 d | 8b |
| Mesilla Park | Mar 12 | Nov 13 | 246 d | 8b |
| Mesquite | Mar 12 | Nov 13 | 246 d | 8b |
| Mexican Springs | May 29 | Sep 28 | 122 d | 6b |
| Miami | Apr 30 | Oct 11 | 164 d | 6a |
| Milan | May 17 | Oct 3 | 139 d | 6a |
| Mills | Apr 30 | Oct 15 | 168 d | 6b |
| Milnesand | Apr 19 | Oct 26 | 190 d | 7b |
| Mimbres | Apr 4 | Nov 8 | 218 d | 7b |
| Montezuma | May 24 | Sep 30 | 129 d | 6b |
| Monticello | May 10 | Oct 8 | 151 d | 7b |
| Monument | Mar 28 | Nov 13 | 230 d | 8a |
| Mora | May 28 | Sep 26 | 121 d | 6a |
| Moriarty | May 14 | Oct 4 | 143 d | 6a |
| Mosquero | May 3 | Oct 12 | 162 d | 6b |
| Mountainair | May 2 | Oct 19 | 170 d | 7a |
| Mule Creek | May 6 | Oct 18 | 165 d | 7b |