Mississippi frost dates: B
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Bailey | Mar 16 | Nov 12 | 241 d | 8b |
| Baldwyn | Apr 1 | Nov 3 | 216 d | 8a |
| Banner | Apr 1 | Nov 3 | 216 d | 8a |
| Bassfield | Mar 17 | Nov 12 | 240 d | 8b |
| Batesville | Mar 28 | Nov 2 | 219 d | 8a |
| Bay Saint Louis | Feb 21 | Dec 3 | 285 d | 9a |
| Bay Springs | Mar 12 | Nov 12 | 245 d | 8b |
| Beaumont | Mar 18 | Nov 12 | 239 d | 8b |
| Becker | Mar 29 | Nov 5 | 221 d | 8a |
| Belden | Mar 21 | Nov 10 | 234 d | 8a |
| Belen | Mar 17 | Nov 7 | 235 d | 8a |
| Bellefontaine | Mar 30 | Nov 4 | 219 d | 8a |
| Belmont | Apr 9 | Oct 28 | 202 d | 7b |
| Belzoni | Mar 3 | Nov 21 | 263 d | 8b |
| Benoit | Mar 12 | Nov 13 | 246 d | 8b |
| Benton | Mar 4 | Nov 24 | 265 d | 8b |
| Bentonia | Mar 4 | Nov 24 | 265 d | 8b |
| Beulah | Mar 14 | Nov 15 | 246 d | 8b |
| Big Creek | Mar 28 | Nov 5 | 222 d | 8a |
| Biloxi | Feb 12 | Dec 14 | 305 d | 9a |
| Blue Mountain | Apr 3 | Oct 30 | 210 d | 8a |
| Blue Springs | Mar 21 | Nov 10 | 234 d | 8a |
| Bogue Chitto | Mar 17 | Nov 12 | 240 d | 8b |
| Bolton | Mar 16 | Nov 6 | 235 d | 8b |
| Booneville | Apr 1 | Nov 3 | 216 d | 8a |
| Boyle | Mar 14 | Nov 15 | 246 d | 8b |
| Brandon | Mar 14 | Nov 14 | 245 d | 8b |
| Braxton | Mar 10 | Nov 16 | 251 d | 8b |
| Brookhaven | Mar 17 | Nov 12 | 240 d | 8b |
| Brooklyn | Mar 14 | Nov 18 | 249 d | 8b |
| Brooksville | Mar 21 | Nov 7 | 231 d | 8b |
| Bruce | Mar 28 | Nov 5 | 222 d | 8a |
| Buckatunna | Mar 17 | Nov 9 | 237 d | 8b |
| Bude | Mar 15 | Nov 12 | 242 d | 8b |
| Burnsville | Apr 9 | Oct 28 | 202 d | 7b |
| Byhalia | Mar 26 | Nov 6 | 225 d | 8a |
| Byram | Mar 6 | Nov 19 | 258 d | 8b |