Bridgewater, Connecticut has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.5 °F (low) to 59.2 °F (high). Annual precipitation averages 49.9 Inches. Bridgewater is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.4 °F | 35.0 °F | 3.53 in. |
| February | 19.0 °F | 37.9 °F | 2.88 in. |
| March | 26.3 °F | 45.9 °F | 3.95 in. |
| April | 37.0 °F | 58.5 °F | 3.89 in. |
| May | 47.1 °F | 69.1 °F | 3.89 in. |
| June | 56.2 °F | 77.1 °F | 4.54 in. |
| July | 61.5 °F | 81.9 °F | 4.73 in. |
| August | 60.2 °F | 80.1 °F | 4.79 in. |
| September | 53.0 °F | 73.0 °F | 4.56 in. |
| October | 41.3 °F | 61.8 °F | 4.97 in. |
| November | 31.9 °F | 50.6 °F | 3.88 in. |
| December | 23.6 °F | 39.8 °F | 4.24 in. |
| Annual | 39.5 °F | 59.2 °F | 49.85 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |