South Dakota frost dates: E
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Eagle Butte | May 6 | Oct 2 | 149 d | 4b |
| Eden | May 2 | Oct 9 | 160 d | 4b |
| Edgemont | May 23 | Sep 20 | 120 d | 4b |
| Egan | May 5 | Oct 1 | 149 d | 4b |
| Elk Point | May 3 | Oct 3 | 153 d | 5a |
| Elkton | May 5 | Oct 1 | 149 d | 4b |
| Ellsworth Afb | May 12 | Oct 1 | 142 d | 5b |
| Emery | Apr 30 | Oct 7 | 160 d | 5a |
| Enning | May 16 | Sep 26 | 133 d | 4b |
| Erwin | May 5 | Oct 4 | 152 d | 4b |
| Estelline | May 10 | Sep 27 | 140 d | 4b |
| Ethan | May 8 | Sep 29 | 144 d | 5a |
| Eureka | May 10 | Sep 30 | 143 d | 4b |