Lake Pocotopaug, Connecticut has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.3 °F (low) to 59.9 °F (high). Annual precipitation averages 51.2 Inches. Lake Pocotopaug 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 | 19.3 °F | 35.9 °F | 3.8 in. |
| February | 20.3 °F | 38.6 °F | 3.3 in. |
| March | 27.5 °F | 46.2 °F | 4.56 in. |
| April | 37.3 °F | 58.5 °F | 4.33 in. |
| May | 46.9 °F | 68.8 °F | 3.84 in. |
| June | 56.4 °F | 77.2 °F | 4.53 in. |
| July | 61.9 °F | 82.4 °F | 4.15 in. |
| August | 60.5 °F | 80.9 °F | 4.35 in. |
| September | 53.2 °F | 74.1 °F | 4.59 in. |
| October | 42.2 °F | 62.5 °F | 5.09 in. |
| November | 33.0 °F | 51.5 °F | 4.02 in. |
| December | 25.3 °F | 41.7 °F | 4.61 in. |
| Annual | 40.3 °F | 59.9 °F | 51.17 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |