Missouri frost dates: J
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Jackson | Apr 7 | Oct 29 | 205 d | 7a |
| Jacksonville | Apr 13 | Oct 25 | 195 d | 6a |
| Jadwin | Apr 17 | Oct 18 | 184 d | 6b |
| Jameson | Apr 19 | Oct 21 | 185 d | 6a |
| Jamesport | Apr 19 | Oct 21 | 185 d | 6a |
| Jamestown | Apr 11 | Oct 25 | 197 d | 6b |
| Jasper | Apr 4 | Oct 27 | 206 d | 7a |
| Jefferson City | Apr 8 | Oct 31 | 206 d | 6b |
| Jerico Springs | Apr 6 | Oct 30 | 207 d | 7a |
| Jerome | Apr 5 | Nov 1 | 210 d | 6a |
| Jonesburg | Apr 14 | Oct 23 | 192 d | 6b |
| Joplin | Apr 9 | Oct 27 | 201 d | 7a |