Maryland frost dates: A
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Abell | Mar 22 | Nov 26 | 249 d | 8a |
| Aberdeen | Apr 10 | Oct 30 | 203 d | 7b |
| Aberdeen Proving Ground | Apr 10 | Oct 30 | 203 d | 7b |
| Abingdon | Apr 10 | Oct 30 | 203 d | 7b |
| Accident | May 9 | Oct 11 | 155 d | 6a |
| Accokeek | Apr 3 | Nov 8 | 219 d | 7b |
| Adamstown | Apr 2 | Nov 6 | 218 d | 7b |
| Allen | Apr 3 | Nov 7 | 218 d | 7b |
| Andrews Air Force Base | Apr 3 | Nov 8 | 219 d | 7b |
| Annapolis | Mar 27 | Nov 13 | 231 d | 8a |
| Annapolis Junction | Apr 5 | Nov 9 | 218 d | 7b |
| Aquasco | Apr 17 | Oct 27 | 193 d | 7b |
| Arnold | Mar 27 | Nov 13 | 231 d | 8a |
| Ashton | Apr 5 | Nov 9 | 218 d | 7b |
| Avenue | Apr 17 | Oct 27 | 193 d | 8a |