Massachusetts frost dates: W
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Waban | Apr 19 | Oct 23 | 187 d | 6b |
| Wakefield | Apr 25 | Oct 17 | 175 d | 6b |
| Wales | Apr 28 | Oct 15 | 170 d | 6b |
| Walpole | Apr 27 | Oct 14 | 170 d | 6b |
| Waltham | Apr 28 | Oct 10 | 165 d | 6b |
| Ware | May 3 | Oct 14 | 164 d | 6a |
| Wareham | Apr 21 | Oct 24 | 186 d | 7a |
| Warren | Apr 28 | Oct 15 | 170 d | 6a |
| Warwick | Apr 25 | Oct 17 | 175 d | 5b |
| Watertown | Apr 19 | Oct 23 | 187 d | 6b |
| Waverley | Apr 19 | Oct 23 | 187 d | 6b |
| Wayland | Apr 26 | Oct 12 | 169 d | 6b |
| Webster | May 1 | Oct 10 | 162 d | 6b |
| Wellesley | Apr 26 | Oct 12 | 169 d | 6b |
| Wellesley Hills | Apr 26 | Oct 12 | 169 d | 6b |
| Wellfleet | Apr 13 | Nov 4 | 205 d | 7b |
| Wendell | May 4 | Oct 8 | 157 d | 5b |
| Wendell Depot | May 4 | Oct 8 | 157 d | 5b |
| Wenham | Apr 24 | Oct 17 | 176 d | 6b |
| West Barnstable | Apr 16 | Oct 30 | 197 d | 7a |
| West Boxford | May 3 | Oct 8 | 158 d | 6b |
| West Boylston | Apr 23 | Oct 21 | 181 d | 6a |
| West Bridgewater | Apr 22 | Oct 19 | 180 d | 6b |
| West Brookfield | Apr 28 | Oct 15 | 170 d | 6a |
| West Chatham | Apr 13 | Nov 4 | 205 d | 7b |
| West Chesterfield | May 13 | Oct 2 | 142 d | 6a |
| West Dennis | Apr 13 | Nov 3 | 204 d | 7b |
| West Falmouth | Apr 11 | Nov 11 | 214 d | 7a |
| West Groton | Apr 29 | Oct 11 | 165 d | 6a |
| West Harwich | Apr 13 | Nov 3 | 204 d | 7b |
| West Hatfield | May 5 | Oct 8 | 156 d | 6a |
| West Hyannisport | Apr 16 | Oct 30 | 197 d | 7a |
| West Medford | Apr 25 | Oct 17 | 175 d | 6b |
| West Millbury | May 1 | Oct 10 | 162 d | 6a |
| West Newbury | May 3 | Oct 8 | 158 d | 6b |
| West Newton | Apr 19 | Oct 23 | 187 d | 6b |
| West Roxbury | Apr 19 | Oct 23 | 187 d | 6b |
| West Springfield | May 3 | Oct 8 | 158 d | 6a |
| West Stockbridge | May 7 | Oct 3 | 149 d | 5b |
| West Tisbury | May 7 | Oct 9 | 155 d | 7a |
| West Townsend | May 1 | Oct 9 | 161 d | 6a |
| West Wareham | Apr 21 | Oct 24 | 186 d | 7a |
| West Warren | May 3 | Oct 14 | 164 d | 6a |
| West Yarmouth | Apr 22 | Oct 28 | 189 d | 7a |
| Westborough | Apr 23 | Oct 21 | 181 d | 6b |
| Westfield | Apr 28 | Oct 17 | 172 d | 6a |
| Westford | Apr 30 | Oct 10 | 163 d | 6a |
| Westminster | May 2 | Oct 13 | 164 d | 6a |
| Weston | Apr 26 | Oct 12 | 169 d | 6b |
| Westport | Apr 11 | Nov 2 | 205 d | 7a |
| Westport Point | Apr 11 | Nov 2 | 205 d | 7a |
| Westwood | Apr 25 | Oct 9 | 167 d | 6b |
| Weymouth | Apr 25 | Oct 22 | 180 d | 6b |
| Whately | May 2 | Oct 9 | 160 d | 6a |
| Wheelwright | May 12 | Oct 1 | 142 d | 6a |
| White Horse Beach | Apr 15 | Nov 1 | 200 d | 7a |
| Whitinsville | Apr 30 | Oct 9 | 162 d | 6b |
| Whitman | Apr 22 | Oct 19 | 180 d | 6b |
| Wilbraham | May 3 | Oct 14 | 164 d | 6a |
| Williamsburg | May 13 | Oct 2 | 142 d | 6a |
| Williamstown | May 10 | Oct 4 | 147 d | 5b |
| Wilmington | Apr 25 | Oct 17 | 175 d | 6b |
| Winchendon | May 6 | Oct 1 | 148 d | 5b |
| Winchester | Apr 25 | Oct 17 | 175 d | 6b |
| Windsor | May 17 | Oct 1 | 137 d | 5b |
| Winthrop | Apr 4 | Nov 9 | 219 d | 7a |
| Woburn | Apr 25 | Oct 17 | 175 d | 6b |
| Woods Hole | Apr 11 | Nov 11 | 214 d | 7b |
| Woodville | Apr 30 | Oct 9 | 162 d | 6b |
| Worcester | Apr 23 | Oct 21 | 181 d | 6a |
| Woronoco | Apr 28 | Oct 17 | 172 d | 6a |
| Worthington | May 13 | Oct 2 | 142 d | 6a |
| Wrentham | Apr 30 | Oct 9 | 162 d | 6b |