Indiana frost dates: S
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Saint Anthony | Apr 10 | Nov 1 | 205 d | 6b |
| Saint Bernice | Apr 23 | Oct 14 | 174 d | 6a |
| Saint Croix | Apr 17 | Oct 19 | 185 d | 6b |
| Saint Joe | Apr 28 | Oct 17 | 172 d | 6a |
| Saint John | Apr 23 | Oct 20 | 180 d | 6a |
| Saint Mary Of The Woods | Apr 15 | Oct 19 | 187 d | 6a |
| Saint Meinrad | Apr 11 | Oct 26 | 198 d | 6b |
| Saint Paul | Apr 15 | Oct 26 | 194 d | 6b |
| Salamonia | Apr 28 | Oct 15 | 170 d | 6a |
| Salem | Apr 17 | Oct 22 | 188 d | 6b |
| San Pierre | Apr 25 | Oct 17 | 175 d | 5b |
| Sandborn | Apr 9 | Oct 30 | 204 d | 6b |
| Santa Claus | Apr 11 | Oct 26 | 198 d | 7a |
| Saratoga | Apr 20 | Oct 21 | 184 d | 6a |
| Schererville | Apr 23 | Oct 20 | 180 d | 6a |
| Schneider | Apr 29 | Oct 16 | 170 d | 5b |
| Schnellville | Apr 10 | Nov 1 | 205 d | 6b |
| Scipio | Apr 21 | Oct 21 | 183 d | 6b |
| Scotland | Apr 9 | Oct 31 | 205 d | 6b |
| Scottsburg | Apr 18 | Oct 20 | 185 d | 6b |
| Sedalia | Apr 21 | Oct 21 | 183 d | 6a |
| Seelyville | Apr 14 | Oct 24 | 193 d | 6a |
| Sellersburg | Mar 31 | Nov 9 | 223 d | 7a |
| Selma | Apr 16 | Oct 25 | 192 d | 6a |
| Servia | Apr 26 | Oct 19 | 176 d | 6a |
| Seymour | Apr 16 | Oct 21 | 188 d | 6b |
| Sharpsville | Apr 27 | Oct 18 | 174 d | 6a |
| Shelburn | Apr 8 | Oct 27 | 202 d | 6a |
| Shelby | Apr 29 | Oct 16 | 170 d | 5b |
| Shelbyville | Apr 17 | Oct 22 | 188 d | 6a |
| Shepardsville | Apr 15 | Oct 19 | 187 d | 6a |
| Sheridan | Apr 23 | Oct 17 | 177 d | 6a |
| Shipshewana | Apr 26 | Oct 21 | 178 d | 6a |
| Shirley | Apr 27 | Oct 17 | 173 d | 6a |
| Shoals | Apr 15 | Oct 23 | 191 d | 6b |
| Silver Lake | Apr 26 | Oct 19 | 176 d | 6a |
| Smithville | Apr 15 | Oct 26 | 194 d | 6b |
| Solsberry | Apr 17 | Oct 22 | 188 d | 6b |
| Somerset | Apr 23 | Oct 21 | 181 d | 6a |
| Somerville | Apr 6 | Oct 30 | 207 d | 7a |
| South Bend | Apr 23 | Oct 23 | 183 d | 6a |
| South Milford | Apr 26 | Oct 21 | 178 d | 6a |
| South Whitley | Apr 27 | Oct 17 | 173 d | 6a |
| Spencer | Apr 20 | Oct 20 | 183 d | 6a |
| Spencerville | Apr 27 | Oct 19 | 175 d | 6a |
| Spiceland | Apr 27 | Oct 17 | 173 d | 6a |
| Springport | Apr 27 | Oct 17 | 173 d | 6a |
| Springville | Apr 10 | Oct 30 | 203 d | 6b |
| Spurgeon | Apr 6 | Oct 30 | 207 d | 7a |
| Stanford | Apr 17 | Oct 22 | 188 d | 6b |
| Star City | Apr 25 | Oct 18 | 176 d | 6a |
| State Line | Apr 21 | Oct 20 | 182 d | 6a |
| Staunton | Apr 14 | Oct 24 | 193 d | 6a |
| Stendal | Apr 6 | Oct 30 | 207 d | 7a |
| Stilesville | Apr 27 | Oct 15 | 171 d | 6a |
| Stinesville | Apr 20 | Oct 20 | 183 d | 6a |
| Stockwell | Apr 20 | Oct 20 | 183 d | 6a |
| Straughn | Apr 27 | Oct 9 | 165 d | 6a |
| Stroh | Apr 30 | Oct 16 | 169 d | 6a |
| Sullivan | Apr 8 | Oct 27 | 202 d | 6b |
| Sulphur | Apr 17 | Oct 19 | 185 d | 6b |
| Sulphur Springs | Apr 27 | Oct 17 | 173 d | 6a |
| Sumava Resorts | Apr 29 | Oct 16 | 170 d | 5b |
| Summitville | Apr 24 | Oct 18 | 177 d | 6a |
| Sunman | Apr 30 | Oct 16 | 169 d | 6b |
| Swayzee | Apr 26 | Oct 20 | 177 d | 6a |
| Sweetser | Apr 26 | Oct 20 | 177 d | 6a |
| Switz City | Apr 9 | Oct 25 | 199 d | 6b |
| Syracuse | Apr 24 | Oct 24 | 183 d | 6a |