Kansas frost dates: S
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Sabetha | Apr 14 | Oct 22 | 191 d | 6a |
| Saint Francis | Apr 30 | Oct 10 | 163 d | 6a |
| Saint George | Apr 18 | Oct 19 | 184 d | 6a |
| Saint Marys | Apr 18 | Oct 19 | 184 d | 6b |
| Saint Paul | Apr 11 | Oct 26 | 198 d | 7a |
| Salina | Apr 18 | Oct 23 | 188 d | 6b |
| Satanta | Apr 23 | Oct 21 | 181 d | 6b |
| Savonburg | Apr 8 | Oct 29 | 204 d | 7a |
| Sawyer | Apr 20 | Oct 20 | 183 d | 6b |
| Scammon | Apr 5 | Oct 31 | 209 d | 7a |
| Scandia | Apr 17 | Oct 21 | 187 d | 6a |
| Schoenchen | Apr 25 | Oct 15 | 173 d | 6b |
| Scott City | Apr 30 | Oct 15 | 168 d | 6a |
| Scranton | Apr 13 | Oct 26 | 196 d | 6b |
| Sedan | Apr 9 | Oct 27 | 201 d | 7a |
| Sedgwick | Apr 14 | Oct 25 | 194 d | 7a |
| Selden | Apr 20 | Oct 20 | 183 d | 6a |
| Seneca | Apr 22 | Oct 13 | 174 d | 6a |
| Severy | Apr 17 | Oct 22 | 188 d | 6b |
| Sharon | Apr 13 | Oct 23 | 193 d | 7a |
| Sharon Springs | Apr 28 | Oct 15 | 170 d | 6a |
| Shawnee | Apr 4 | Nov 2 | 212 d | 6b |
| Shawnee Mission | Apr 10 | Oct 29 | 202 d | 6b |
| Silver Lake | Apr 16 | Oct 22 | 189 d | 6b |
| Simpson | Apr 19 | Oct 19 | 183 d | 6b |
| Smith Center | Apr 24 | Oct 15 | 174 d | 6a |
| Soldier | Apr 24 | Oct 14 | 173 d | 6a |
| Solomon | Apr 14 | Oct 23 | 192 d | 6b |
| South Haven | Apr 15 | Oct 29 | 197 d | 7a |
| South Hutchinson | Apr 18 | Oct 21 | 186 d | 6b |
| Spearville | Apr 21 | Oct 20 | 182 d | 6b |
| Spivey | Apr 15 | Oct 21 | 189 d | 7a |
| Spring Hill | Apr 13 | Oct 24 | 194 d | 6b |
| St John | Apr 18 | Oct 21 | 186 d | 6b |
| Stafford | Apr 18 | Oct 21 | 186 d | 6b |
| Stark | Apr 8 | Oct 29 | 204 d | 7a |
| Sterling | Apr 15 | Oct 23 | 191 d | 6b |
| Stilwell | Apr 8 | Oct 29 | 204 d | 6b |
| Stockton | Apr 30 | Oct 12 | 165 d | 6a |
| Strong City | Apr 15 | Oct 22 | 190 d | 6b |
| Sublette | Apr 23 | Oct 21 | 181 d | 6b |
| Summerfield | Apr 22 | Oct 13 | 174 d | 6a |
| Sun City | Apr 25 | Oct 15 | 173 d | 6b |
| Sycamore | Apr 5 | Oct 31 | 209 d | 7a |
| Sylvan Grove | Apr 21 | Oct 17 | 179 d | 6b |
| Sylvia | Apr 18 | Oct 21 | 186 d | 6b |
| Syracuse | May 1 | Oct 10 | 162 d | 6a |