| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F | |
| Average First Frost Date: | Nov. 1 - Nov. 10 | |
| Average Last Frost Date: | Apr. 11 - Apr. 20 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 59c - Southern New England Coastal Plains and Hills | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 06605 - Bridgeport, CT | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 24 | 31 | 40 | 50 | 59 | 65 | 64 | 56 | 45 | 37 | 27 | 43 |
| Avg Max Temp (°F) | 37 | 39 | 48 | 58 | 68 | 77 | 83 | 81 | 74 | 63 | 53 | 42 | 60 |
| Avg Precip (In.) | 3.9 | 2.99 | 4.25 | 4.13 | 4.22 | 3.73 | 3.9 | 3.88 | 3.78 | 3.68 | 3.86 | 3.67 | 46 |