Oklahoma frost dates: C
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Cache | Mar 21 | Nov 12 | 236 d | 8a |
| Caddo | Mar 31 | Nov 5 | 219 d | 8a |
| Calera | Mar 31 | Nov 5 | 219 d | 8a |
| Calumet | Apr 12 | Oct 27 | 198 d | 7b |
| Calvin | Apr 6 | Oct 31 | 208 d | 7b |
| Camargo | Apr 15 | Oct 23 | 191 d | 7a |
| Cameron | Mar 25 | Nov 6 | 226 d | 7b |
| Canadian | Mar 31 | Nov 3 | 217 d | 7b |
| Caney | Apr 5 | Nov 1 | 210 d | 8a |
| Canton | Apr 6 | Nov 3 | 211 d | 7a |
| Canute | Apr 3 | Nov 1 | 212 d | 7b |
| Cardin | Apr 6 | Oct 27 | 204 d | 7a |
| Carmen | Apr 9 | Oct 31 | 205 d | 7a |
| Carnegie | Apr 6 | Oct 31 | 208 d | 7b |
| Carney | Apr 7 | Oct 30 | 206 d | 7b |
| Carrier | Apr 10 | Oct 31 | 204 d | 7a |
| Carter | Apr 5 | Nov 2 | 211 d | 7b |
| Cartwright | Mar 14 | Nov 19 | 250 d | 8a |
| Cashion | Apr 3 | Nov 4 | 215 d | 7b |
| Castle | Mar 24 | Nov 9 | 230 d | 7b |
| Catoosa | Mar 31 | Nov 4 | 218 d | 7b |
| Cement | Apr 3 | Nov 3 | 214 d | 7b |
| Centrahoma | Mar 31 | Nov 1 | 215 d | 7b |
| Chandler | Apr 7 | Oct 30 | 206 d | 7b |
| Chattanooga | Apr 7 | Nov 2 | 209 d | 8a |
| Checotah | Apr 2 | Nov 2 | 214 d | 7b |
| Chelsea | Apr 4 | Nov 1 | 211 d | 7a |
| Cherokee | Apr 10 | Oct 29 | 202 d | 7a |
| Chester | Apr 11 | Oct 25 | 197 d | 7a |
| Cheyenne | Apr 3 | Nov 3 | 214 d | 7a |
| Chickasha | Apr 4 | Nov 1 | 211 d | 7b |
| Choctaw | Apr 2 | Nov 5 | 217 d | 7b |
| Chouteau | Apr 5 | Oct 30 | 208 d | 7b |
| Claremore | Apr 7 | Oct 30 | 206 d | 7a |
| Clarita | Mar 31 | Nov 1 | 215 d | 7b |
| Clayton | Apr 11 | Oct 27 | 199 d | 7b |
| Cleo Springs | Apr 5 | Nov 1 | 210 d | 7a |
| Cleveland | Apr 6 | Oct 29 | 206 d | 7a |
| Clinton | Apr 13 | Oct 28 | 198 d | 7b |
| Coalgate | Mar 31 | Nov 4 | 218 d | 7b |
| Colbert | Mar 19 | Nov 12 | 238 d | 8a |
| Colcord | Mar 31 | Nov 2 | 216 d | 7a |
| Coleman | Mar 31 | Nov 5 | 219 d | 8a |
| Collinsville | Mar 31 | Nov 4 | 218 d | 7a |
| Colony | Apr 3 | Nov 3 | 214 d | 7b |
| Comanche | Mar 25 | Nov 7 | 227 d | 8a |
| Commerce | Apr 6 | Oct 27 | 204 d | 7a |
| Concho | Apr 6 | Oct 31 | 208 d | 7b |
| Connerville | Mar 29 | Nov 5 | 221 d | 7b |
| Cookson | Apr 4 | Oct 31 | 210 d | 7b |
| Copan | Apr 11 | Oct 24 | 196 d | 7a |
| Cordell | Apr 3 | Nov 1 | 212 d | 7b |
| Corn | Apr 6 | Nov 3 | 211 d | 7b |
| Council Hill | Apr 2 | Nov 2 | 214 d | 7b |
| Countyline | Mar 28 | Nov 7 | 224 d | 8a |
| Covington | Apr 10 | Oct 29 | 202 d | 7a |
| Coweta | Apr 1 | Nov 1 | 214 d | 7b |
| Coyle | Apr 3 | Nov 1 | 212 d | 7b |
| Crawford | Apr 9 | Oct 27 | 201 d | 7a |
| Crescent | Apr 3 | Nov 4 | 215 d | 7a |
| Cromwell | Mar 24 | Nov 9 | 230 d | 7b |
| Crowder | Mar 31 | Nov 3 | 217 d | 7b |
| Cushing | Apr 1 | Nov 5 | 218 d | 7b |
| Custer City | Apr 13 | Oct 28 | 198 d | 7b |
| Cyril | Apr 3 | Nov 3 | 214 d | 7b |