Maryland frost dates: W
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Waldorf | Apr 17 | Oct 27 | 193 d | 7b |
| Walkersville | Apr 2 | Nov 6 | 218 d | 7a |
| Warwick | Apr 7 | Nov 2 | 209 d | 7b |
| Washington Grove | Apr 1 | Nov 6 | 219 d | 7b |
| Welcome | Mar 28 | Nov 8 | 225 d | 7b |
| West Friendship | Apr 14 | Oct 29 | 198 d | 7b |
| West River | Mar 23 | Nov 20 | 242 d | 8a |
| Westernport | Apr 30 | Oct 15 | 168 d | 6b |
| Westminster | Apr 24 | Oct 20 | 179 d | 7a |
| Westover | Mar 31 | Nov 11 | 225 d | 7b |
| Whaleyville | Apr 7 | Nov 2 | 209 d | 7b |
| White Hall | Apr 19 | Oct 25 | 189 d | 7a |
| White Marsh | Mar 24 | Nov 21 | 242 d | 8a |
| White Plains | Apr 3 | Nov 8 | 219 d | 7b |
| Whiteford | Apr 3 | Nov 6 | 217 d | 7a |
| Willards | Apr 10 | Oct 30 | 203 d | 7b |
| Williamsport | Apr 11 | Oct 28 | 200 d | 7a |
| Windsor Mill | Apr 2 | Nov 7 | 219 d | 7b |
| Wingate | Mar 29 | Nov 15 | 231 d | 8a |
| Wittman | Apr 1 | Nov 7 | 220 d | 8a |
| Woodbine | Apr 14 | Oct 29 | 198 d | 7b |
| Woodsboro | Apr 22 | Oct 20 | 181 d | 7a |
| Woodstock | Apr 2 | Nov 7 | 219 d | 7b |
| Woolford | Apr 1 | Nov 7 | 220 d | 8a |
| Worton | Apr 3 | Nov 5 | 216 d | 7b |
| Wye Mills | Mar 29 | Nov 12 | 228 d | 7b |