Ohio frost dates: S
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Sabina | Apr 20 | Oct 20 | 183 d | 6b |
| Saint Clairsville | Apr 27 | Oct 22 | 178 d | 6b |
| Saint Henry | Apr 27 | Oct 19 | 175 d | 6a |
| Saint Johns | Apr 22 | Oct 22 | 183 d | 6a |
| Saint Louisville | Apr 29 | Oct 16 | 170 d | 6a |
| Saint Marys | Apr 27 | Oct 19 | 175 d | 6a |
| Saint Paris | Apr 24 | Oct 19 | 178 d | 6a |
| Salem | May 2 | Oct 13 | 164 d | 6a |
| Salesville | Apr 27 | Oct 22 | 178 d | 6b |
| Salineville | May 2 | Oct 13 | 164 d | 6a |
| Sandusky | Apr 10 | Nov 5 | 209 d | 6b |
| Sandyville | Apr 30 | Oct 15 | 168 d | 6b |
| Sarahsville | Apr 30 | Oct 14 | 167 d | 6b |
| Sardinia | Apr 29 | Oct 11 | 165 d | 6b |
| Sardis | Apr 26 | Oct 26 | 183 d | 6b |
| Savannah | Apr 30 | Oct 15 | 168 d | 6a |
| Scio | Apr 21 | Oct 25 | 187 d | 6b |
| Scioto Furnace | Apr 17 | Oct 25 | 191 d | 7a |
| Scott | Apr 25 | Oct 19 | 177 d | 6a |
| Scottown | Apr 30 | Oct 15 | 168 d | 7a |
| Seaman | Apr 29 | Oct 11 | 165 d | 6b |
| Sebring | May 2 | Oct 13 | 164 d | 6a |
| Sedalia | Apr 24 | Oct 18 | 177 d | 6a |
| Senecaville | Apr 28 | Oct 17 | 172 d | 6b |
| Seven Mile | Apr 22 | Oct 18 | 179 d | 6b |
| Seville | Apr 29 | Oct 19 | 173 d | 6a |
| Shade | Apr 25 | Oct 23 | 181 d | 6b |
| Shadyside | Apr 26 | Oct 21 | 178 d | 6b |
| Shandon | Apr 19 | Oct 22 | 186 d | 6b |
| Sharon Center | Apr 29 | Oct 19 | 173 d | 6b |
| Sharpsburg | Apr 25 | Oct 23 | 181 d | 6b |
| Shauck | Apr 26 | Oct 20 | 177 d | 6a |
| Shawnee | Apr 30 | Oct 17 | 170 d | 6a |
| Sheffield Lake | Apr 22 | Nov 1 | 193 d | 7a |
| Shelby | Apr 30 | Oct 15 | 168 d | 6a |
| Sherrodsville | Apr 29 | Oct 15 | 169 d | 6b |
| Sherwood | Apr 28 | Oct 17 | 172 d | 6a |
| Shiloh | Apr 26 | Oct 22 | 179 d | 6a |
| Shreve | Apr 24 | Oct 21 | 180 d | 6a |
| Sidney | Apr 27 | Oct 20 | 176 d | 6a |
| Sinking Spring | Apr 24 | Oct 20 | 179 d | 6b |
| Smithfield | Apr 18 | Nov 1 | 197 d | 6b |
| Smithville | Apr 29 | Oct 14 | 168 d | 6a |
| Solon | Apr 8 | Nov 12 | 218 d | 6a |
| Somerdale | Apr 30 | Oct 15 | 168 d | 6b |
| Somerset | Apr 30 | Oct 17 | 170 d | 6a |
| Somerville | Apr 25 | Oct 20 | 178 d | 6a |
| South Bloomingville | Apr 30 | Oct 14 | 167 d | 6b |
| South Charleston | Apr 24 | Oct 18 | 177 d | 6a |
| South Lebanon | Apr 23 | Oct 18 | 178 d | 6b |
| South Point | Apr 16 | Oct 30 | 197 d | 7a |
| South Salem | Apr 20 | Oct 22 | 185 d | 6b |
| South Solon | Apr 24 | Oct 18 | 177 d | 6a |
| South Vienna | Apr 24 | Oct 18 | 177 d | 6a |
| South Webster | Apr 17 | Oct 25 | 191 d | 7a |
| Southington | May 1 | Oct 20 | 172 d | 6a |
| Sparta | Apr 26 | Oct 20 | 177 d | 6a |
| Spencer | Apr 29 | Oct 19 | 173 d | 6a |
| Spencerville | Apr 24 | Oct 24 | 183 d | 6a |
| Spring Valley | Apr 18 | Oct 24 | 189 d | 6b |
| Springboro | Apr 17 | Oct 26 | 192 d | 6b |
| Springfield | Apr 25 | Oct 19 | 177 d | 6a |
| Stafford | Apr 30 | Oct 14 | 167 d | 6b |
| Sterling | Apr 29 | Oct 14 | 168 d | 6a |
| Steubenville | Apr 29 | Oct 20 | 174 d | 6b |
| Stewart | Apr 25 | Oct 23 | 181 d | 6b |
| Stillwater | Apr 29 | Oct 15 | 169 d | 6b |
| Stockdale | Apr 21 | Oct 24 | 186 d | 6b |
| Stockport | Apr 27 | Oct 21 | 177 d | 6b |
| Stone Creek | Apr 26 | Oct 21 | 178 d | 6b |
| Stony Ridge | Apr 20 | Oct 27 | 190 d | 6b |
| Stout | Apr 20 | Oct 22 | 185 d | 6b |
| Stoutsville | Apr 17 | Oct 28 | 194 d | 6a |
| Stow | Apr 30 | Oct 21 | 174 d | 6b |
| Strasburg | Apr 30 | Oct 15 | 168 d | 6b |
| Stratton | Apr 22 | Oct 28 | 189 d | 7a |
| Streetsboro | Apr 21 | Oct 29 | 191 d | 6a |
| Strongsville | Apr 20 | Nov 3 | 197 d | 6b |
| Struthers | Apr 30 | Oct 23 | 176 d | 6a |
| Stryker | Apr 26 | Oct 17 | 174 d | 6a |
| Sugar Grove | Apr 22 | Oct 24 | 185 d | 6a |
| Sugarcreek | Apr 18 | Oct 28 | 193 d | 6a |
| Sullivan | Apr 29 | Oct 19 | 173 d | 6a |
| Sulphur Springs | Apr 19 | Oct 27 | 191 d | 6a |
| Summerfield | Apr 30 | Oct 14 | 167 d | 6b |
| Summit Station | Apr 18 | Oct 27 | 192 d | 6a |
| Summitville | May 2 | Oct 13 | 164 d | 6a |
| Sunbury | Apr 27 | Oct 17 | 173 d | 6a |
| Swanton | Apr 22 | Oct 24 | 185 d | 6a |
| Sycamore | Apr 29 | Oct 17 | 171 d | 6a |
| Sylvania | Apr 22 | Oct 24 | 185 d | 6b |
| Syracuse | Apr 18 | Oct 28 | 193 d | 6b |