Pawcatuck, Connecticut has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 6 °C (low) to 15.1 °C (high). Annual precipitation averages 1211.1 Millimeters. Pawcatuck 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.7 °C | 3.5 °C | 99.06 mm |
| February | -4.9 °C | 4.4 °C | 86.11 mm |
| March | -1.1 °C | 7.8 °C | 125.48 mm |
| April | 4 °C | 13.2 °C | 114.55 mm |
| May | 9.3 °C | 18.3 °C | 88.9 mm |
| June | 14.6 °C | 23.3 °C | 95.5 mm |
| July | 17.9 °C | 26.6 °C | 76.96 mm |
| August | 17.2 °C | 26.1 °C | 92.96 mm |
| September | 13.3 °C | 22.9 °C | 90.93 mm |
| October | 7.3 °C | 17.2 °C | 118.62 mm |
| November | 1.9 °C | 11.7 °C | 101.6 mm |
| December | -2.3 °C | 6.7 °C | 120.4 mm |
| Annual | 6 °C | 15.1 °C | 1211.07 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 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 | Dfb - Humid Continental Mild Summer, Wet All Year |