Poquonock Bridge, Connecticut has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 43.4 °F (low) to 59.2 °F (high). Annual precipitation averages 46.8 Inches. Poquonock Bridge is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.4 °F | 38.4 °F | 3.79 in. |
| February | 23.6 °F | 40.0 °F | 3.16 in. |
| March | 30.5 °F | 46.2 °F | 4.75 in. |
| April | 39.6 °F | 55.8 °F | 4.37 in. |
| May | 48.8 °F | 64.8 °F | 3.55 in. |
| June | 58.3 °F | 73.8 °F | 3.67 in. |
| July | 64.7 °F | 79.6 °F | 3.05 in. |
| August | 63.6 °F | 78.6 °F | 3.76 in. |
| September | 56.7 °F | 73.1 °F | 3.98 in. |
| October | 46.6 °F | 62.9 °F | 4.47 in. |
| November | 37.2 °F | 53.3 °F | 3.75 in. |
| December | 28.7 °F | 44.2 °F | 4.54 in. |
| Annual | 43.4 °F | 59.2 °F | 46.84 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |