West Virginia frost dates: S
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Sabine | Apr 22 | Oct 24 | 185 d | 7a |
| Saint Albans | Apr 18 | Oct 26 | 191 d | 7a |
| Saint Marys | Apr 23 | Oct 26 | 186 d | 6b |
| Salem | Apr 22 | Oct 23 | 184 d | 6b |
| Salt Rock | Apr 8 | Nov 1 | 207 d | 7a |
| Sand Fork | Apr 25 | Oct 24 | 182 d | 6b |
| Sandstone | Apr 10 | Oct 30 | 203 d | 6b |
| Sandyville | May 1 | Oct 14 | 166 d | 6b |
| Sarah Ann | Apr 8 | Nov 2 | 208 d | 7a |
| Saulsville | Apr 16 | Oct 28 | 195 d | 7a |
| Saxon | Apr 22 | Oct 24 | 185 d | 6b |
| Scarbro | Apr 21 | Oct 19 | 181 d | 6b |
| Scott Depot | Apr 18 | Oct 30 | 195 d | 7a |
| Secondcreek | Apr 30 | Oct 12 | 165 d | 6b |
| Selbyville | Apr 25 | Oct 19 | 177 d | 6b |
| Seneca Rocks | Apr 30 | Oct 11 | 164 d | 6a |
| Seth | Apr 16 | Oct 27 | 194 d | 7a |
| Shady Spring | Apr 22 | Oct 21 | 182 d | 6b |
| Shanks | Apr 26 | Oct 18 | 175 d | 6b |
| Sharples | Apr 8 | Nov 2 | 208 d | 7a |
| Shenandoah Junction | Apr 26 | Oct 18 | 175 d | 7a |
| Shepherdstown | Apr 26 | Oct 18 | 175 d | 7a |
| Shinnston | Apr 18 | Oct 24 | 189 d | 6b |
| Shirley | May 1 | Oct 15 | 167 d | 6b |
| Shoals | Apr 14 | Oct 26 | 195 d | 7a |
| Shock | Apr 29 | Oct 19 | 173 d | 6b |
| Short Creek | Apr 23 | Oct 25 | 185 d | 7a |
| Simon | Apr 15 | Oct 27 | 195 d | 7a |
| Simpson | Apr 26 | Oct 22 | 179 d | 6b |
| Sinks Grove | Apr 26 | Oct 17 | 174 d | 6b |
| Sistersville | May 1 | Oct 15 | 167 d | 6b |
| Skelton | May 6 | Oct 10 | 157 d | 6b |
| Slab Fork | Apr 24 | Oct 20 | 179 d | 6b |
| Slanesville | Apr 26 | Oct 18 | 175 d | 7a |
| Slatyfork | May 12 | Oct 7 | 148 d | 6a |
| Smithburg | Apr 28 | Oct 21 | 176 d | 6b |
| Smithers | Apr 7 | Nov 4 | 211 d | 7a |
| Smithfield | May 3 | Oct 10 | 160 d | 6a |
| Smithville | Apr 26 | Oct 17 | 174 d | 6b |
| Smoot | May 2 | Oct 11 | 162 d | 6b |
| Snowshoe | May 12 | Oct 7 | 148 d | 6a |
| Sod | Apr 18 | Oct 26 | 191 d | 7a |
| Sophia | May 6 | Oct 10 | 157 d | 6b |
| South Charleston | Apr 23 | Oct 20 | 180 d | 7a |
| Southside | Apr 28 | Oct 19 | 174 d | 6b |
| Spanishburg | Apr 30 | Oct 10 | 163 d | 7a |
| Spelter | Apr 22 | Oct 23 | 184 d | 6b |
| Spencer | Apr 30 | Oct 17 | 170 d | 6b |
| Spring Dale | May 2 | Oct 11 | 162 d | 6b |
| Springfield | Apr 26 | Oct 18 | 175 d | 7a |
| Spurlockville | Apr 16 | Oct 27 | 194 d | 7a |
| Squire | Apr 27 | Oct 18 | 174 d | 7a |
| Stanaford | Apr 22 | Oct 21 | 182 d | 6b |
| Stephenson | Apr 24 | Oct 20 | 179 d | 7a |
| Stollings | Apr 8 | Nov 2 | 208 d | 7a |
| Sugar Grove | Apr 30 | Oct 11 | 164 d | 6b |
| Sumerco | Apr 16 | Oct 27 | 194 d | 7a |
| Summersville | Apr 27 | Oct 19 | 175 d | 6b |
| Summit Point | Apr 25 | Oct 18 | 176 d | 7a |
| Surveyor | May 6 | Oct 10 | 157 d | 6b |
| Sutton | Apr 22 | Oct 28 | 189 d | 6b |
| Swiss | Apr 22 | Oct 22 | 183 d | 6b |
| Switchback | Apr 24 | Oct 17 | 176 d | 7a |
| Switzer | Apr 8 | Nov 2 | 208 d | 7a |
| Sylvester | Apr 7 | Nov 4 | 211 d | 7a |