Virginia frost dates: M
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Machipongo | Mar 26 | Nov 20 | 239 d | 8a |
| Madison | Apr 17 | Oct 22 | 188 d | 7a |
| Madison Heights | Apr 17 | Oct 25 | 191 d | 7b |
| Maidens | Apr 17 | Oct 27 | 193 d | 7a |
| Manakin Sabot | Apr 17 | Oct 27 | 193 d | 7b |
| Manassas | Apr 12 | Oct 27 | 198 d | 7a |
| Mannboro | Apr 7 | Nov 2 | 209 d | 7b |
| Manquin | Apr 7 | Nov 1 | 208 d | 7b |
| Mappsville | Mar 31 | Nov 11 | 225 d | 8a |
| Marion | Apr 23 | Oct 20 | 180 d | 7a |
| Marionville | Mar 26 | Nov 20 | 239 d | 8a |
| Markham | Apr 13 | Oct 28 | 198 d | 7a |
| Marshall | Apr 9 | Nov 1 | 206 d | 7a |
| Martinsville | Apr 24 | Oct 21 | 180 d | 7b |
| Maryus | Apr 1 | Nov 10 | 223 d | 8a |
| Mascot | Apr 6 | Nov 1 | 209 d | 7b |
| Mathews | Apr 1 | Nov 10 | 223 d | 8a |
| Mattaponi | Apr 6 | Nov 1 | 209 d | 7b |
| Maurertown | Apr 24 | Oct 20 | 179 d | 6b |
| Mavisdale | Apr 21 | Oct 26 | 188 d | 7a |
| Max Meadows | Apr 25 | Oct 18 | 176 d | 7a |
| Maxie | Apr 21 | Oct 26 | 188 d | 7a |
| Mc Clure | Apr 14 | Nov 1 | 201 d | 7a |
| Mc Coy | Apr 24 | Oct 19 | 178 d | 7a |
| Mc Dowell | May 8 | Oct 5 | 150 d | 6b |
| Mc Gaheysville | Apr 21 | Oct 23 | 185 d | 7a |
| Mc Kenney | Apr 11 | Oct 30 | 202 d | 7b |
| Mc Lean | Apr 9 | Oct 31 | 205 d | 7b |
| Meadows Of Dan | Apr 21 | Oct 25 | 187 d | 7a |
| Meadowview | Apr 21 | Oct 20 | 182 d | 7a |
| Mears | Mar 31 | Nov 11 | 225 d | 8a |
| Mechanicsville | Apr 10 | Oct 31 | 204 d | 7b |
| Meherrin | Apr 8 | Nov 1 | 207 d | 7b |
| Melfa | Apr 4 | Nov 7 | 217 d | 8a |
| Mendota | Apr 21 | Oct 20 | 182 d | 7a |
| Meredithville | Apr 7 | Oct 31 | 207 d | 7b |
| Merrifield | Apr 14 | Oct 29 | 198 d | 7b |
| Merry Point | Apr 1 | Nov 10 | 223 d | 8a |
| Middlebrook | Apr 15 | Oct 27 | 195 d | 7a |
| Middleburg | Apr 17 | Nov 1 | 198 d | 7a |
| Middletown | Apr 13 | Oct 28 | 198 d | 7a |
| Midland | Apr 9 | Nov 1 | 206 d | 7a |
| Midlothian | Apr 3 | Nov 4 | 215 d | 7b |
| Milford | Apr 14 | Oct 27 | 196 d | 7b |
| Millboro | Apr 26 | Oct 19 | 176 d | 7a |
| Millers Tavern | Apr 7 | Nov 1 | 208 d | 7b |
| Millwood | Apr 17 | Oct 29 | 195 d | 7a |
| Mineral | Apr 26 | Oct 20 | 177 d | 7a |
| Mint Spring | Apr 15 | Oct 27 | 195 d | 7a |
| Mitchells | Apr 7 | Oct 30 | 206 d | 7a |
| Modest Town | Mar 31 | Nov 11 | 225 d | 8a |
| Mollusk | Apr 6 | Nov 1 | 209 d | 8a |
| Moneta | Apr 7 | Oct 31 | 207 d | 7b |
| Monroe | Apr 17 | Oct 25 | 191 d | 7b |
| Montebello | May 2 | Oct 13 | 164 d | 7a |
| Monterey | May 8 | Oct 5 | 150 d | 6a |
| Montpelier | Apr 10 | Oct 29 | 202 d | 7a |
| Montpelier Station | Apr 7 | Oct 30 | 206 d | 7a |
| Montross | Apr 8 | Oct 30 | 205 d | 7b |
| Montvale | Apr 8 | Oct 31 | 206 d | 7b |
| Moon | Apr 1 | Nov 10 | 223 d | 8a |
| Morattico | Apr 8 | Oct 30 | 205 d | 8a |
| Moseley | Apr 7 | Nov 2 | 209 d | 7b |
| Mount Crawford | Apr 21 | Oct 23 | 185 d | 7a |
| Mount Holly | Apr 8 | Oct 30 | 205 d | 7b |
| Mount Jackson | Apr 25 | Oct 19 | 177 d | 7a |
| Mount Sidney | Apr 15 | Oct 27 | 195 d | 7a |
| Mount Solon | Apr 15 | Oct 27 | 195 d | 7a |
| Mount Vernon | Apr 3 | Nov 8 | 219 d | 7b |
| Mouth Of Wilson | Apr 16 | Oct 27 | 194 d | 7a |
| Mustoe | May 8 | Oct 5 | 150 d | 6a |