Kansas frost dates: B
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Baileyville | Apr 22 | Oct 13 | 174 d | 6a |
| Baldwin City | Apr 12 | Oct 28 | 199 d | 6b |
| Barnard | Apr 28 | Oct 15 | 170 d | 6b |
| Barnes | Apr 24 | Oct 14 | 173 d | 6a |
| Bartlett | Apr 15 | Oct 24 | 192 d | 7a |
| Basehor | Apr 16 | Oct 22 | 189 d | 6b |
| Baxter Springs | Apr 5 | Oct 31 | 209 d | 7a |
| Bazine | Apr 29 | Oct 14 | 168 d | 6b |
| Beattie | Apr 20 | Oct 18 | 181 d | 6a |
| Beaumont | Apr 16 | Oct 20 | 187 d | 7a |
| Beeler | Apr 29 | Oct 14 | 168 d | 6a |
| Belle Plaine | Apr 14 | Oct 22 | 191 d | 7a |
| Belleville | Apr 22 | Oct 17 | 178 d | 6a |
| Beloit | Apr 19 | Oct 19 | 183 d | 6b |
| Belpre | Apr 20 | Oct 20 | 183 d | 6b |
| Belvue | Apr 18 | Oct 19 | 184 d | 6b |
| Bendena | Apr 19 | Oct 19 | 183 d | 6a |
| Benedict | Apr 12 | Oct 26 | 197 d | 7a |
| Bennington | Apr 20 | Oct 19 | 182 d | 6b |
| Bentley | Apr 14 | Oct 25 | 194 d | 7a |
| Benton | Apr 10 | Oct 27 | 200 d | 7a |
| Bern | Apr 22 | Oct 13 | 174 d | 6a |
| Berryton | Apr 15 | Oct 21 | 189 d | 6b |
| Beverly | Apr 28 | Oct 15 | 170 d | 6b |
| Bird City | May 4 | Oct 12 | 161 d | 6a |
| Bison | Apr 30 | Oct 10 | 163 d | 6a |
| Blue Mound | Apr 13 | Oct 23 | 193 d | 6b |
| Blue Rapids | Apr 25 | Oct 13 | 171 d | 6a |
| Bluff City | Apr 9 | Oct 30 | 204 d | 7a |
| Bogue | Apr 29 | Oct 13 | 167 d | 6a |
| Bonner Springs | Apr 16 | Oct 22 | 189 d | 6b |
| Bremen | Apr 25 | Oct 13 | 171 d | 6a |
| Brewster | May 9 | Oct 4 | 148 d | 6a |
| Bronson | Apr 15 | Oct 22 | 190 d | 6b |
| Brookville | Apr 27 | Oct 16 | 172 d | 6b |
| Brownell | Apr 29 | Oct 13 | 167 d | 6a |
| Bucklin | Apr 21 | Oct 22 | 184 d | 6b |
| Bucyrus | Apr 8 | Oct 29 | 204 d | 6b |
| Buffalo | Apr 10 | Oct 28 | 201 d | 7a |
| Buhler | Apr 21 | Oct 18 | 180 d | 6b |
| Bunker Hill | Apr 22 | Oct 19 | 180 d | 6b |
| Burden | Apr 16 | Oct 22 | 189 d | 7a |
| Burdett | Apr 25 | Oct 18 | 176 d | 6b |
| Burdick | Apr 24 | Oct 14 | 173 d | 6b |
| Burlingame | Apr 13 | Oct 26 | 196 d | 6b |
| Burlington | Apr 11 | Oct 26 | 198 d | 6b |
| Burns | Apr 22 | Oct 17 | 178 d | 6b |
| Burr Oak | Apr 30 | Oct 8 | 161 d | 6a |
| Burrton | Apr 21 | Oct 18 | 180 d | 6b |
| Bushton | Apr 23 | Oct 16 | 176 d | 6b |
| Byers | Apr 20 | Oct 20 | 183 d | 6b |