Minnesota frost dates: C
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Caledonia | Apr 29 | Oct 10 | 164 d | 5a |
| Callaway | May 15 | Sep 24 | 132 d | 4a |
| Calumet | May 17 | Sep 24 | 130 d | 4a |
| Cambridge | May 2 | Oct 4 | 155 d | 4b |
| Campbell | May 4 | Oct 3 | 152 d | 4a |
| Canby | May 2 | Oct 5 | 156 d | 4b |
| Cannon Falls | Apr 23 | Oct 14 | 174 d | 4b |
| Canton | May 10 | Sep 28 | 141 d | 4b |
| Canyon | May 27 | Sep 20 | 116 d | 4a |
| Carlos | May 2 | Oct 8 | 159 d | 4a |
| Carlton | May 26 | Sep 23 | 120 d | 4a |
| Carver | May 2 | Oct 5 | 156 d | 4b |
| Cass Lake | May 17 | Sep 26 | 132 d | 3b |
| Castle Rock | Apr 27 | Oct 10 | 166 d | 4b |
| Cedar | May 1 | Oct 7 | 159 d | 4b |
| Center City | May 19 | Sep 25 | 129 d | 4a |
| Ceylon | Apr 28 | Oct 8 | 163 d | 5a |
| Champlin | May 5 | Oct 2 | 150 d | 5a |
| Chandler | May 7 | Sep 29 | 145 d | 5a |
| Chanhassen | Apr 30 | Oct 9 | 162 d | 5a |
| Chaska | May 5 | Oct 5 | 153 d | 4b |
| Chatfield | May 14 | Sep 28 | 137 d | 4b |
| Chisago City | May 3 | Oct 5 | 155 d | 4b |
| Chisholm | Jun 5 | Sep 8 | 95 d | 3b |
| Chokio | May 1 | Oct 8 | 160 d | 4b |
| Circle Pines | Apr 23 | Oct 20 | 180 d | 5a |
| Clara City | May 4 | Oct 1 | 150 d | 4b |
| Claremont | May 5 | Oct 6 | 154 d | 5a |
| Clarissa | May 13 | Sep 27 | 137 d | 4a |
| Clarkfield | May 4 | Oct 1 | 150 d | 4b |
| Clarks Grove | Apr 27 | Oct 9 | 165 d | 5a |
| Clear Lake | May 7 | Sep 30 | 146 d | 4b |
| Clearbrook | May 15 | Sep 26 | 134 d | 3b |
| Clearwater | May 7 | Sep 30 | 146 d | 4b |
| Clements | May 4 | Oct 1 | 150 d | 5a |
| Cleveland | May 2 | Oct 4 | 155 d | 5a |
| Climax | May 11 | Sep 27 | 139 d | 4a |
| Clinton | May 1 | Oct 8 | 160 d | 4b |
| Clitherall | May 5 | Oct 5 | 153 d | 4a |
| Clontarf | May 4 | Oct 3 | 152 d | 4b |
| Cloquet | May 26 | Sep 23 | 120 d | 4a |
| Cohasset | May 16 | Oct 1 | 138 d | 4a |
| Cokato | Apr 30 | Oct 10 | 163 d | 4b |
| Cold Spring | May 3 | Oct 7 | 157 d | 4b |
| Coleraine | May 17 | Sep 24 | 130 d | 4a |
| Collegeville | May 3 | Oct 7 | 157 d | 4b |
| Cologne | May 5 | Oct 5 | 153 d | 4b |
| Comfrey | May 4 | Oct 1 | 150 d | 5a |
| Comstock | May 4 | Oct 2 | 151 d | 4a |
| Conger | Apr 27 | Oct 9 | 165 d | 5a |
| Cook | May 12 | Oct 1 | 142 d | 3b |
| Correll | May 1 | Oct 8 | 160 d | 4b |
| Cosmos | May 6 | Oct 2 | 149 d | 4b |
| Cottage Grove | Apr 23 | Oct 19 | 179 d | 5a |
| Cotton | May 27 | Sep 20 | 116 d | 3b |
| Cottonwood | May 5 | Oct 3 | 151 d | 5a |
| Courtland | May 2 | Oct 7 | 158 d | 5a |
| Crane Lake | Jun 2 | Sep 15 | 105 d | 3b |
| Cromwell | May 31 | Sep 18 | 110 d | 4a |
| Crookston | May 11 | Sep 27 | 139 d | 4a |
| Crosby | May 13 | Sep 27 | 137 d | 4a |
| Crosslake | May 6 | Oct 7 | 154 d | 4a |
| Crystal Bay | Apr 30 | Oct 9 | 162 d | 4b |
| Currie | May 2 | Oct 5 | 156 d | 5a |
| Cushing | May 4 | Oct 5 | 154 d | 4a |
| Cyrus | May 4 | Oct 1 | 150 d | 4b |