Ohio frost dates: W
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Wadsworth | Apr 29 | Oct 19 | 173 d | 6a |
| Wakefield | Apr 21 | Oct 24 | 186 d | 6b |
| Wakeman | Apr 27 | Oct 22 | 178 d | 6b |
| Walbridge | Apr 20 | Oct 27 | 190 d | 6b |
| Waldo | Apr 24 | Oct 20 | 179 d | 6a |
| Walhonding | May 2 | Oct 8 | 159 d | 6a |
| Walnut Creek | May 2 | Oct 14 | 165 d | 6a |
| Wapakoneta | Apr 24 | Oct 24 | 183 d | 6a |
| Warnock | Apr 20 | Oct 29 | 192 d | 6b |
| Warren | Apr 30 | Oct 23 | 176 d | 6a |
| Warsaw | Apr 27 | Oct 18 | 174 d | 6a |
| Washington Court House | Apr 23 | Oct 21 | 181 d | 6b |
| Washingtonville | May 2 | Oct 13 | 164 d | 6a |
| Waterford | Apr 24 | Oct 22 | 181 d | 6b |
| Waterloo | Apr 30 | Oct 15 | 168 d | 7a |
| Watertown | Apr 24 | Oct 22 | 181 d | 6b |
| Waterville | Apr 22 | Oct 24 | 185 d | 6b |
| Wauseon | Apr 29 | Oct 16 | 170 d | 6a |
| Waverly | Apr 21 | Oct 22 | 184 d | 6b |
| Wayland | May 1 | Oct 20 | 172 d | 6a |
| Wayne | Apr 22 | Oct 25 | 186 d | 6b |
| Waynesburg | Apr 30 | Oct 15 | 168 d | 6b |
| Waynesfield | Apr 22 | Oct 22 | 183 d | 6a |
| Waynesville | Apr 17 | Oct 26 | 192 d | 6b |
| Wellington | Apr 27 | Oct 22 | 178 d | 6a |
| Wellston | Apr 22 | Oct 21 | 182 d | 6b |
| Wellsville | Apr 22 | Oct 28 | 189 d | 6b |
| West Alexandria | Apr 25 | Oct 20 | 178 d | 6a |
| West Chester | Apr 22 | Oct 18 | 179 d | 6b |
| West Elkton | Apr 25 | Oct 20 | 178 d | 6a |
| West Farmington | May 1 | Oct 20 | 172 d | 6a |
| West Jefferson | Apr 24 | Oct 18 | 177 d | 6b |
| West Lafayette | Apr 18 | Oct 28 | 193 d | 6b |
| West Liberty | Apr 26 | Oct 20 | 177 d | 6a |
| West Manchester | Apr 25 | Oct 20 | 178 d | 6a |
| West Mansfield | Apr 26 | Oct 20 | 177 d | 6a |
| West Millgrove | Apr 22 | Oct 25 | 186 d | 6b |
| West Milton | Apr 16 | Oct 28 | 195 d | 6a |
| West Point | May 2 | Oct 13 | 164 d | 6b |
| West Portsmouth | Apr 21 | Oct 24 | 186 d | 6b |
| West Salem | Apr 29 | Oct 19 | 173 d | 6a |
| West Union | Apr 29 | Oct 11 | 165 d | 6b |
| West Unity | Apr 26 | Oct 17 | 174 d | 6a |
| Westerville | Apr 22 | Oct 24 | 185 d | 6b |
| Westfield Center | Apr 29 | Oct 19 | 173 d | 6a |
| Westlake | Apr 20 | Nov 3 | 197 d | 7a |
| Weston | Apr 24 | Oct 21 | 180 d | 6a |
| Westville | Apr 24 | Oct 19 | 178 d | 6a |
| Wharton | Apr 29 | Oct 17 | 171 d | 6a |
| Wheelersburg | Apr 17 | Oct 25 | 191 d | 7a |
| Whipple | Apr 18 | Oct 27 | 192 d | 6b |
| White Cottage | Apr 19 | Oct 25 | 189 d | 6a |
| Whitehouse | Apr 22 | Oct 24 | 185 d | 6b |
| Wickliffe | Apr 26 | Oct 31 | 188 d | 6b |
| Wilberforce | Apr 18 | Oct 24 | 189 d | 6b |
| Wilkesville | Apr 27 | Oct 14 | 170 d | 6b |
| Willard | Apr 25 | Oct 25 | 183 d | 6a |
| Williamsburg | Apr 23 | Oct 18 | 178 d | 6b |
| Williamsfield | May 4 | Oct 14 | 163 d | 6a |
| Williamsport | Apr 17 | Oct 28 | 194 d | 6b |
| Williamstown | Apr 19 | Oct 23 | 187 d | 6a |
| Williston | Apr 20 | Oct 27 | 190 d | 6b |
| Willoughby | Apr 26 | Oct 31 | 188 d | 6b |
| Willow Wood | Apr 30 | Oct 15 | 168 d | 7a |
| Willshire | Apr 23 | Oct 22 | 182 d | 6a |
| Wilmington | Apr 17 | Oct 22 | 188 d | 6b |
| Wilmot | Apr 30 | Oct 15 | 168 d | 6a |
| Winchester | Apr 29 | Oct 11 | 165 d | 6b |
| Windham | May 1 | Oct 20 | 172 d | 6a |
| Windsor | May 5 | Oct 18 | 166 d | 6a |
| Winesburg | May 2 | Oct 14 | 165 d | 6a |
| Wingett Run | Apr 23 | Oct 26 | 186 d | 6b |
| Winona | May 2 | Oct 13 | 164 d | 6a |
| Wolf Run | Apr 22 | Oct 28 | 189 d | 6b |
| Woodsfield | Apr 26 | Oct 26 | 183 d | 6b |
| Woodstock | Apr 24 | Oct 19 | 178 d | 6a |
| Woodville | Apr 20 | Oct 27 | 190 d | 6b |
| Wooster | Apr 30 | Oct 12 | 165 d | 6a |
| Wren | Apr 23 | Oct 19 | 179 d | 6a |