Missouri frost dates: K
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Kahoka | Apr 17 | Oct 22 | 188 d | 6a |
| Kaiser | Mar 31 | Nov 3 | 217 d | 6b |
| Kansas City | Apr 4 | Nov 2 | 212 d | 6b |
| Kearney | Apr 19 | Oct 17 | 181 d | 6a |
| Kelso | Apr 5 | Oct 25 | 203 d | 7a |
| Kennett | Mar 31 | Nov 1 | 215 d | 7b |
| Kewanee | Mar 28 | Nov 3 | 220 d | 7b |
| Keytesville | Apr 12 | Oct 22 | 193 d | 6a |
| Kidder | Apr 23 | Oct 17 | 177 d | 6a |
| Kimberling City | Apr 16 | Oct 21 | 188 d | 7a |
| Kimmswick | Apr 9 | Oct 26 | 200 d | 7a |
| King City | Apr 17 | Oct 20 | 186 d | 6a |
| Kingdom City | Apr 10 | Oct 24 | 197 d | 6b |
| Kingston | Apr 23 | Oct 17 | 177 d | 6a |
| Kingsville | Apr 13 | Oct 23 | 193 d | 6b |
| Kirbyville | Apr 8 | Nov 2 | 208 d | 7a |
| Kirksville | Apr 21 | Oct 19 | 181 d | 6a |
| Kissee Mills | Apr 6 | Oct 31 | 208 d | 7a |
| Knob Lick | Apr 21 | Oct 16 | 178 d | 6b |
| Knob Noster | Apr 14 | Oct 21 | 190 d | 6b |
| Knox City | Apr 17 | Oct 19 | 185 d | 6a |
| Koeltztown | Apr 8 | Oct 26 | 201 d | 6b |
| Koshkonong | Apr 12 | Oct 24 | 195 d | 7a |