Pleasant Valley, Connecticut has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.5 °F (low) to 60 °F (high). Annual precipitation averages 51.8 Inches. Pleasant Valley is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.3 °F | 34.8 °F | 3.66 in. |
| February | 17.6 °F | 37.9 °F | 3.23 in. |
| March | 25.2 °F | 46.1 °F | 4.3 in. |
| April | 35.5 °F | 59.3 °F | 3.98 in. |
| May | 46.2 °F | 70.3 °F | 4.06 in. |
| June | 55.7 °F | 78.8 °F | 4.85 in. |
| July | 60.8 °F | 83.6 °F | 4.51 in. |
| August | 59.1 °F | 81.7 °F | 4.52 in. |
| September | 51.7 °F | 74.4 °F | 4.89 in. |
| October | 40.2 °F | 62.1 °F | 5.31 in. |
| November | 30.7 °F | 50.6 °F | 3.96 in. |
| December | 22.6 °F | 39.8 °F | 4.57 in. |
| Annual | 38.5 °F | 60 °F | 51.84 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |