Missouri frost dates: S
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Saginaw | Apr 18 | Oct 22 | 187 d | 7a |
| Saint Albans | Apr 12 | Oct 23 | 194 d | 6b |
| Saint Ann | Apr 2 | Nov 4 | 216 d | 7a |
| Saint Charles | Apr 9 | Oct 26 | 200 d | 6b |
| Saint Clair | Apr 11 | Oct 23 | 195 d | 6b |
| Saint Elizabeth | Apr 8 | Oct 28 | 203 d | 6b |
| Saint James | Apr 5 | Nov 1 | 210 d | 6b |
| Saint Joseph | Apr 19 | Oct 17 | 181 d | 6a |
| Saint Louis | Apr 1 | Nov 4 | 217 d | 7a |
| Saint Mary | Apr 19 | Oct 20 | 184 d | 6b |
| Saint Patrick | Apr 17 | Oct 22 | 188 d | 6a |
| Saint Peters | Apr 9 | Oct 26 | 200 d | 6b |
| Saint Robert | Apr 15 | Oct 21 | 189 d | 6b |
| Saint Thomas | Apr 8 | Oct 31 | 206 d | 6b |
| Sainte Genevieve | Apr 13 | Oct 21 | 191 d | 6b |
| Salem | Apr 17 | Oct 18 | 184 d | 6b |
| Salisbury | Apr 12 | Oct 22 | 193 d | 6a |
| Santa Fe | Apr 11 | Oct 25 | 197 d | 6a |
| Sarcoxie | Apr 4 | Oct 27 | 206 d | 7a |
| Savannah | Apr 17 | Oct 19 | 185 d | 6a |
| Saverton | Apr 4 | Nov 4 | 214 d | 6b |
| Schell City | Apr 8 | Oct 29 | 204 d | 6b |
| Scott City | Apr 5 | Oct 25 | 203 d | 7a |
| Sedalia | Apr 18 | Oct 22 | 187 d | 6b |
| Sedgewickville | Apr 19 | Oct 20 | 184 d | 6b |
| Seligman | Apr 18 | Oct 22 | 187 d | 7a |
| Senath | Mar 31 | Nov 1 | 215 d | 7b |
| Seneca | Apr 7 | Oct 31 | 207 d | 7a |
| Seymour | Apr 23 | Oct 17 | 177 d | 6b |
| Shelbina | Apr 21 | Oct 17 | 179 d | 6a |
| Shelbyville | Apr 21 | Oct 17 | 179 d | 6a |
| Sheldon | Apr 9 | Oct 27 | 201 d | 7a |
| Shell Knob | Apr 14 | Oct 26 | 195 d | 7a |
| Sheridan | Apr 20 | Oct 19 | 182 d | 5b |
| Sibley | Apr 10 | Oct 27 | 200 d | 6a |
| Sikeston | Mar 26 | Nov 6 | 225 d | 7b |
| Silex | Apr 20 | Oct 20 | 183 d | 6b |
| Silva | Apr 9 | Oct 26 | 200 d | 6b |
| Skidmore | Apr 19 | Oct 17 | 181 d | 5b |
| Slater | Apr 10 | Oct 24 | 197 d | 6b |
| Smithton | Apr 10 | Oct 26 | 199 d | 6b |
| Smithville | Apr 18 | Oct 20 | 185 d | 6a |
| Solo | Apr 10 | Oct 23 | 196 d | 7a |
| South Greenfield | Apr 11 | Oct 25 | 197 d | 6b |
| South West City | Apr 15 | Oct 26 | 194 d | 7a |
| Sparta | Apr 26 | Oct 13 | 170 d | 6b |
| Spickard | Apr 20 | Oct 16 | 179 d | 6a |
| Spokane | Apr 15 | Oct 23 | 191 d | 7a |
| Springfield | Apr 4 | Oct 27 | 206 d | 6b |
| Squires | Apr 10 | Oct 27 | 200 d | 7a |
| Stanberry | Apr 17 | Oct 20 | 186 d | 6a |
| Stanton | Apr 11 | Oct 23 | 195 d | 6b |
| Stark City | Apr 9 | Oct 26 | 200 d | 7a |
| Steedman | Apr 10 | Oct 24 | 197 d | 6b |
| Steele | Mar 24 | Nov 6 | 227 d | 8a |
| Steelville | Apr 26 | Oct 8 | 165 d | 6a |
| Stella | Apr 7 | Oct 31 | 207 d | 7a |
| Stet | Apr 16 | Oct 23 | 190 d | 6a |
| Stewartsville | Apr 19 | Oct 19 | 183 d | 6a |
| Stockton | Apr 6 | Oct 30 | 207 d | 7a |
| Stotts City | Apr 14 | Oct 21 | 190 d | 7a |
| Stoutland | Apr 15 | Oct 21 | 189 d | 6b |
| Stoutsville | Apr 12 | Oct 22 | 193 d | 6a |
| Stover | Apr 8 | Oct 29 | 204 d | 6b |
| Strafford | Apr 13 | Oct 24 | 194 d | 6b |
| Strasburg | Apr 8 | Oct 29 | 204 d | 6b |
| Sturdivant | Apr 7 | Oct 27 | 203 d | 7a |
| Sturgeon | Apr 13 | Oct 25 | 195 d | 6b |
| Success | Apr 10 | Oct 23 | 196 d | 6b |
| Sullivan | Apr 11 | Oct 23 | 195 d | 6b |
| Summersville | Apr 7 | Oct 27 | 203 d | 7a |
| Sumner | Apr 14 | Oct 23 | 192 d | 6a |
| Sunrise Beach | Mar 31 | Nov 3 | 217 d | 6b |
| Sweet Springs | Apr 17 | Oct 20 | 186 d | 6b |
| Syracuse | Apr 8 | Oct 29 | 204 d | 6b |