Louisiana frost dates: M
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Madisonville | Mar 12 | Nov 18 | 251 d | 9a |
| Mamou | Feb 26 | Nov 27 | 274 d | 9a |
| Mandeville | Mar 12 | Nov 18 | 251 d | 9a |
| Mangham | Feb 28 | Nov 26 | 271 d | 8b |
| Mansfield | Mar 8 | Nov 20 | 257 d | 8b |
| Mansura | Feb 28 | Nov 24 | 269 d | 9a |
| Many | Mar 20 | Nov 9 | 234 d | 9a |
| Maringouin | Feb 28 | Nov 24 | 269 d | 9a |
| Marion | Mar 14 | Nov 16 | 247 d | 8b |
| Marksville | Feb 28 | Nov 24 | 269 d | 9a |
| Marrero | Jan 24 | Jan 2 | 343 d | 9b |
| Marthaville | Mar 20 | Nov 9 | 234 d | 8b |
| Mathews | Feb 5 | Dec 14 | 312 d | 9b |
| Maurepas | Feb 9 | Dec 14 | 308 d | 9a |
| Maurice | Feb 26 | Nov 28 | 275 d | 9a |
| Melrose | Feb 28 | Dec 1 | 276 d | 9a |
| Melville | Feb 19 | Dec 5 | 289 d | 9a |
| Mer Rouge | Mar 15 | Nov 12 | 242 d | 8b |
| Meraux | Feb 10 | Dec 17 | 310 d | 9b |
| Mermentau | Feb 19 | Dec 4 | 288 d | 9a |
| Merryville | Mar 1 | Nov 25 | 269 d | 9a |
| Metairie | Jan 30 | Dec 31 | 335 d | 9b |
| Milton | Feb 26 | Nov 28 | 275 d | 9a |
| Minden | Mar 17 | Nov 14 | 242 d | 8b |
| Mittie | Mar 1 | Nov 24 | 268 d | 9a |
| Monroe | Mar 8 | Nov 15 | 252 d | 8b |
| Montegut | Feb 8 | Dec 19 | 314 d | 9b |
| Monterey | Mar 6 | Nov 22 | 261 d | 9a |
| Montgomery | Feb 28 | Dec 1 | 276 d | 9a |
| Mooringsport | Mar 6 | Nov 19 | 258 d | 8b |
| Mora | Mar 2 | Nov 27 | 270 d | 9a |
| Moreauville | Feb 28 | Nov 24 | 269 d | 9a |
| Morgan City | Jan 30 | Jan 1 | 336 d | 9b |
| Morganza | Feb 19 | Dec 5 | 289 d | 9a |
| Morrow | Feb 28 | Nov 24 | 269 d | 9a |
| Morse | Feb 20 | Dec 4 | 287 d | 9a |
| Mount Airy | Feb 9 | Dec 14 | 308 d | 9a |
| Mount Hermon | Mar 15 | Nov 16 | 246 d | 8b |