Missouri frost dates: A
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Adrian | Apr 12 | Oct 23 | 194 d | 6b |
| Advance | Apr 7 | Oct 27 | 203 d | 7a |
| Agency | Apr 17 | Oct 19 | 185 d | 6a |
| Alba | Apr 4 | Oct 27 | 206 d | 7a |
| Albany | Apr 17 | Oct 21 | 187 d | 6a |
| Aldrich | Apr 14 | Oct 23 | 192 d | 6b |
| Alexandria | Apr 10 | Oct 27 | 200 d | 6a |
| Allendale | Apr 24 | Oct 14 | 173 d | 5b |
| Alma | Apr 6 | Oct 30 | 207 d | 6b |
| Altamont | Apr 19 | Oct 21 | 185 d | 6a |
| Altenburg | Apr 7 | Oct 29 | 205 d | 7a |
| Alton | Apr 17 | Oct 21 | 187 d | 7a |
| Amazonia | Apr 19 | Oct 17 | 181 d | 6a |
| Amity | Apr 19 | Oct 19 | 183 d | 6a |
| Amoret | Apr 12 | Oct 23 | 194 d | 6b |
| Amsterdam | Apr 12 | Oct 23 | 194 d | 6b |
| Anabel | Apr 8 | Oct 28 | 203 d | 6a |
| Anderson | Apr 15 | Oct 23 | 191 d | 7a |
| Annada | Apr 20 | Oct 20 | 183 d | 6b |
| Annapolis | Apr 9 | Oct 26 | 200 d | 6b |
| Anniston | Mar 26 | Nov 6 | 225 d | 7b |
| Appleton City | Apr 7 | Oct 29 | 205 d | 6b |
| Arbela | Apr 23 | Oct 17 | 177 d | 6a |
| Arbyrd | Mar 31 | Nov 1 | 215 d | 8a |
| Arcadia | Apr 21 | Oct 16 | 178 d | 6b |
| Archie | Apr 12 | Oct 23 | 194 d | 6b |
| Arcola | Apr 6 | Oct 30 | 207 d | 7a |
| Argyle | Apr 8 | Oct 26 | 201 d | 6b |
| Armstrong | Apr 12 | Oct 22 | 193 d | 6b |
| Arnold | Apr 9 | Oct 26 | 200 d | 7a |
| Arrow Rock | Apr 13 | Oct 22 | 192 d | 6b |
| Asbury | Apr 6 | Oct 24 | 201 d | 7a |
| Ash Grove | Apr 11 | Oct 24 | 196 d | 6b |
| Ashburn | Apr 4 | Nov 4 | 214 d | 6b |
| Ashland | Apr 7 | Oct 29 | 205 d | 6b |
| Atlanta | Apr 8 | Oct 28 | 203 d | 6a |
| Augusta | Apr 8 | Oct 25 | 200 d | 6b |
| Aurora | Apr 15 | Oct 23 | 191 d | 7a |
| Auxvasse | Apr 11 | Oct 25 | 197 d | 6b |
| Ava | Apr 23 | Oct 17 | 177 d | 7a |
| Avilla | Apr 4 | Oct 27 | 206 d | 7a |