Bridgeport, Connecticut has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7 °C (low) to 15.9 °C (high). Annual precipitation averages 1236.7 Millimeters. Bridgeport is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.9 °C | 3.6 °C | 92.71 mm |
| February | -4.2 °C | 4.6 °C | 77.98 mm |
| March | -0.3 °C | 8.3 °C | 110.49 mm |
| April | 5.1 °C | 14.3 °C | 106.43 mm |
| May | 10.6 °C | 19.7 °C | 97.03 mm |
| June | 15.9 °C | 24.8 °C | 114.05 mm |
| July | 19.2 °C | 28 °C | 88.39 mm |
| August | 18.7 °C | 27.1 °C | 106.17 mm |
| September | 14.7 °C | 23.9 °C | 112.01 mm |
| October | 8.4 °C | 17.8 °C | 119.63 mm |
| November | 2.8 °C | 11.9 °C | 101.09 mm |
| December | -1.6 °C | 6.6 °C | 110.74 mm |
| Annual | 7 °C | 15.9 °C | 1236.72 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |