North Carolina frost dates: B
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Badin | Mar 29 | Nov 4 | 220 d | 8a |
| Bahama | Apr 2 | Nov 4 | 216 d | 8a |
| Bailey | Mar 22 | Nov 12 | 235 d | 8a |
| Bakersville | Apr 24 | Oct 19 | 178 d | 7a |
| Balsam | Apr 30 | Oct 14 | 167 d | 7a |
| Balsam Grove | Apr 21 | Oct 23 | 185 d | 7a |
| Banner Elk | Apr 30 | Oct 14 | 167 d | 6b |
| Barco | Mar 28 | Nov 12 | 229 d | 8b |
| Barium Springs | Apr 16 | Oct 25 | 192 d | 7b |
| Barnardsville | Apr 5 | Oct 31 | 209 d | 7a |
| Barnesville | Apr 1 | Nov 5 | 218 d | 8b |
| Bat Cave | Apr 5 | Oct 30 | 208 d | 7b |
| Bath | Mar 8 | Dec 5 | 272 d | 8b |
| Battleboro | Mar 31 | Nov 7 | 221 d | 8a |
| Bayboro | Mar 30 | Nov 8 | 223 d | 8b |
| Bear Creek | Mar 31 | Nov 4 | 218 d | 8a |
| Beaufort | Mar 10 | Dec 1 | 266 d | 8b |
| Belews Creek | Mar 26 | Nov 9 | 228 d | 8a |
| Belhaven | Mar 8 | Dec 5 | 272 d | 8b |
| Bellarthur | Mar 27 | Nov 8 | 226 d | 8a |
| Belmont | Mar 30 | Nov 3 | 218 d | 8a |
| Belvidere | Mar 27 | Nov 17 | 235 d | 8a |
| Bennett | Mar 31 | Nov 4 | 218 d | 8a |
| Benson | Mar 28 | Nov 7 | 224 d | 8a |
| Bessemer City | Mar 27 | Nov 9 | 227 d | 8a |
| Bethania | Apr 9 | Oct 31 | 205 d | 7b |
| Bethel | Mar 27 | Nov 8 | 226 d | 8a |
| Beulaville | Apr 7 | Oct 30 | 206 d | 8a |
| Biscoe | Mar 25 | Nov 14 | 234 d | 8a |
| Black Creek | Mar 22 | Nov 12 | 235 d | 8a |
| Black Mountain | Apr 19 | Oct 23 | 187 d | 7a |
| Bladenboro | Mar 29 | Nov 8 | 224 d | 8b |
| Blanch | Mar 31 | Nov 4 | 218 d | 7b |
| Blounts Creek | Mar 8 | Dec 5 | 272 d | 8b |
| Blowing Rock | Apr 25 | Oct 21 | 179 d | 6b |
| Boiling Springs | Apr 12 | Oct 25 | 196 d | 8a |
| Bolivia | Mar 24 | Nov 17 | 238 d | 8b |
| Bolton | Mar 27 | Nov 8 | 226 d | 8b |
| Bonlee | Mar 31 | Nov 4 | 218 d | 8a |
| Boomer | Apr 7 | Nov 1 | 208 d | 7b |
| Boone | May 2 | Oct 13 | 164 d | 7a |
| Boonville | Apr 16 | Oct 25 | 192 d | 7b |
| Bostic | Apr 11 | Oct 27 | 199 d | 7b |
| Brasstown | Apr 22 | Oct 20 | 181 d | 7b |
| Brevard | Apr 21 | Oct 23 | 185 d | 7b |
| Bridgeton | Mar 23 | Nov 15 | 237 d | 8b |
| Broadway | Apr 10 | Oct 30 | 203 d | 8a |
| Browns Summit | Apr 1 | Nov 4 | 217 d | 8a |
| Brunswick | Mar 29 | Nov 6 | 222 d | 8b |
| Bryson City | Apr 16 | Oct 24 | 191 d | 7b |
| Buies Creek | Mar 30 | Nov 6 | 221 d | 8a |
| Bullock | Mar 31 | Nov 5 | 219 d | 7b |
| Bunn | Apr 11 | Oct 29 | 201 d | 8a |
| Bunnlevel | Mar 30 | Nov 6 | 221 d | 8a |
| Burgaw | Apr 2 | Nov 5 | 217 d | 8a |
| Burlington | Mar 29 | Nov 9 | 225 d | 8a |
| Burnsville | Apr 24 | Oct 19 | 178 d | 7a |
| Butner | Apr 4 | Nov 4 | 214 d | 8a |
| Buxton | Mar 1 | Dec 20 | 294 d | 9a |
| Bynum | Apr 1 | Nov 7 | 220 d | 8a |