Kentucky frost dates: B
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Bagdad | May 1 | Oct 10 | 162 d | 6b |
| Bandana | Apr 3 | Nov 5 | 216 d | 7a |
| Banner | Apr 23 | Oct 23 | 183 d | 7a |
| Barbourville | Apr 19 | Oct 24 | 188 d | 7a |
| Bardstown | Apr 13 | Oct 25 | 195 d | 7a |
| Bardwell | Apr 6 | Oct 30 | 207 d | 7a |
| Barlow | Apr 2 | Oct 31 | 212 d | 7a |
| Baskett | Apr 3 | Nov 2 | 213 d | 7a |
| Battletown | Apr 19 | Oct 24 | 188 d | 7a |
| Baxter | Apr 15 | Oct 30 | 198 d | 7a |
| Bays | Apr 6 | Nov 1 | 209 d | 7a |
| Bear Branch | Apr 16 | Oct 26 | 193 d | 7a |
| Beattyville | Apr 12 | Oct 25 | 196 d | 6b |
| Beaumont | Apr 26 | Oct 18 | 175 d | 7a |
| Beauty | Apr 20 | Oct 24 | 187 d | 7a |
| Beaver | Apr 29 | Oct 16 | 170 d | 7a |
| Beaver Dam | Apr 10 | Oct 22 | 195 d | 7a |
| Bedford | Apr 11 | Oct 31 | 203 d | 6b |
| Bee Spring | Apr 22 | Oct 22 | 183 d | 7a |
| Beech Creek | Apr 15 | Oct 20 | 188 d | 7a |
| Beech Grove | Apr 2 | Nov 1 | 213 d | 7a |
| Beechmont | Apr 15 | Oct 20 | 188 d | 7a |
| Belcher | Apr 22 | Oct 23 | 184 d | 7a |
| Belfry | Apr 8 | Nov 2 | 208 d | 7a |
| Bellevue | Apr 16 | Oct 25 | 192 d | 6b |
| Belton | Apr 15 | Oct 20 | 188 d | 7a |
| Benham | Apr 18 | Oct 28 | 193 d | 6b |
| Benton | Apr 9 | Oct 19 | 193 d | 7a |
| Berea | Apr 5 | Nov 2 | 211 d | 7a |
| Berry | Apr 18 | Oct 23 | 188 d | 6b |
| Bethelridge | Apr 5 | Oct 30 | 208 d | 7a |
| Bethlehem | Apr 15 | Oct 24 | 192 d | 6b |
| Betsy Layne | Apr 23 | Oct 23 | 183 d | 7a |
| Beverly | Apr 15 | Oct 30 | 198 d | 7a |
| Bevinsville | Apr 21 | Oct 22 | 184 d | 7a |
| Big Clifty | Apr 26 | Oct 15 | 172 d | 7a |
| Big Creek | Apr 16 | Oct 26 | 193 d | 7a |
| Big Laurel | Apr 15 | Oct 30 | 198 d | 7a |
| Bighill | Apr 5 | Nov 2 | 211 d | 6b |
| Bimble | Apr 19 | Oct 24 | 188 d | 7a |
| Blackey | Apr 18 | Oct 28 | 193 d | 7a |
| Blaine | Apr 24 | Oct 17 | 176 d | 6b |
| Bledsoe | Apr 15 | Oct 30 | 198 d | 7a |
| Bloomfield | Apr 23 | Oct 16 | 176 d | 6b |
| Blue River | Apr 23 | Oct 23 | 183 d | 7a |
| Boaz | Apr 5 | Oct 28 | 206 d | 7a |
| Bonnieville | Apr 21 | Oct 18 | 180 d | 7a |
| Bonnyman | Apr 19 | Oct 25 | 189 d | 7a |
| Booneville | Apr 17 | Oct 22 | 188 d | 6b |
| Boons Camp | Apr 19 | Oct 25 | 189 d | 7a |
| Boston | Apr 18 | Oct 25 | 190 d | 7a |
| Bowling Green | Apr 5 | Oct 31 | 209 d | 7a |
| Bradfordsville | Apr 22 | Oct 20 | 181 d | 7a |
| Brandenburg | Apr 19 | Oct 24 | 188 d | 7a |
| Breeding | Apr 5 | Nov 2 | 211 d | 7a |
| Bremen | Apr 2 | Nov 1 | 213 d | 7a |
| Brodhead | Apr 18 | Oct 24 | 189 d | 7a |
| Bronston | Apr 5 | Oct 30 | 208 d | 7a |
| Brooks | Apr 6 | Nov 1 | 209 d | 7a |
| Brooksville | Apr 11 | Oct 30 | 202 d | 6b |
| Browder | Apr 15 | Oct 20 | 188 d | 7a |
| Brownsville | Apr 4 | Oct 31 | 210 d | 7a |
| Bryants Store | Apr 19 | Oct 24 | 188 d | 7a |
| Bryantsville | Apr 7 | Nov 1 | 208 d | 7a |
| Buckhorn | Apr 19 | Oct 25 | 189 d | 7a |
| Buckner | Apr 12 | Oct 25 | 196 d | 6b |
| Buffalo | Apr 16 | Oct 25 | 192 d | 7a |
| Bulan | Apr 19 | Oct 25 | 189 d | 7a |
| Burdine | Apr 29 | Oct 16 | 170 d | 6b |
| Burgin | Apr 7 | Nov 1 | 208 d | 7a |
| Burkesville | Apr 26 | Oct 18 | 175 d | 7a |
| Burlington | Apr 18 | Oct 25 | 190 d | 6b |
| Burna | Apr 3 | Oct 30 | 210 d | 7a |
| Burnside | Apr 5 | Oct 30 | 208 d | 7a |
| Bush | Apr 29 | Oct 16 | 170 d | 7a |
| Busy | Apr 19 | Oct 25 | 189 d | 7a |
| Butler | Apr 16 | Oct 31 | 198 d | 6b |
| Bypro | Apr 21 | Oct 22 | 184 d | 7a |