Connecticut frost dates
Median last spring frost and first fall frost for 267 places in Connecticut. Last frost ranges from Apr 5 in Bridgeport to May 11 in Canaan.
Largest cities
| City | Last frost | First frost | Season | Zone |
|---|---|---|---|---|
| Bridgeport | Apr 5 | Nov 6 | 215 d | 7a |
| New Haven | Apr 17 | Oct 27 | 193 d | 7a |
| Stamford | Apr 17 | Oct 23 | 189 d | 7a |
| Hartford | Apr 17 | Oct 26 | 192 d | 6b |
| Waterbury | Apr 26 | Oct 16 | 173 d | 6b |
| Norwalk | Apr 17 | Oct 23 | 189 d | 7a |
| Danbury | Apr 20 | Oct 20 | 183 d | 6b |
| New Britain | Apr 17 | Oct 26 | 192 d | 6b |
| West Hartford | Apr 17 | Oct 26 | 192 d | 6b |
| Bristol | Apr 25 | Oct 18 | 176 d | 6b |
| Meriden | Apr 26 | Oct 16 | 173 d | 6b |
| Hamden | Apr 18 | Oct 26 | 191 d | 6b |
| Fairfield | Apr 5 | Nov 6 | 215 d | 7a |
| West Haven | Apr 17 | Oct 27 | 193 d | 7a |
| Milford | Apr 5 | Nov 6 | 215 d | 7a |
| Stratford | Apr 5 | Nov 6 | 215 d | 7a |
| East Hartford | Apr 17 | Oct 26 | 192 d | 6b |
| Middletown | Apr 26 | Oct 16 | 173 d | 6b |
| Enfield | Apr 21 | Oct 16 | 178 d | 6b |
| Southington | Apr 26 | Oct 16 | 173 d | 6b |
| Shelton | Apr 25 | Oct 17 | 175 d | 6b |
| Norwich | Apr 14 | Oct 24 | 193 d | 6b |
| Trumbull | Apr 5 | Nov 6 | 215 d | 7a |
| Torrington | May 8 | Oct 5 | 150 d | 6a |
| Glastonbury | Apr 17 | Oct 26 | 192 d | 6b |
| Naugatuck | Apr 18 | Oct 26 | 191 d | 6b |
| Manchester | Apr 17 | Oct 26 | 192 d | 6b |
| Newington | Apr 17 | Oct 26 | 192 d | 6b |
| Cheshire | Apr 18 | Oct 26 | 191 d | 6b |
| Branford | Apr 17 | Oct 27 | 193 d | 7a |
| Windsor | Apr 21 | Oct 16 | 178 d | 6b |
| New London | Apr 16 | Oct 28 | 195 d | 7a |
| Wethersfield | Apr 17 | Oct 26 | 192 d | 6b |
| Westport | Apr 17 | Oct 23 | 189 d | 7a |
| Farmington | Apr 17 | Oct 26 | 192 d | 6b |
| South Windsor | Apr 17 | Oct 26 | 192 d | 6b |
| North Haven | Apr 18 | Oct 26 | 191 d | 6b |
| Windham | Apr 28 | Oct 13 | 168 d | 6b |
| Guilford | Apr 17 | Oct 27 | 193 d | 7a |
| Bloomfield | Apr 21 | Oct 16 | 178 d | 6b |