Eastford, Connecticut has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.5 °F (low) to 58.9 °F (high). Annual precipitation averages 46.1 Inches. Eastford 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 | 17.0 °F | 35.3 °F | 3.36 in. |
| February | 17.7 °F | 37.7 °F | 3.01 in. |
| March | 25.3 °F | 45.3 °F | 4.03 in. |
| April | 35.4 °F | 57.7 °F | 3.78 in. |
| May | 45.5 °F | 68.2 °F | 3.41 in. |
| June | 54.8 °F | 76.2 °F | 4.01 in. |
| July | 60.7 °F | 81.3 °F | 3.83 in. |
| August | 58.9 °F | 79.6 °F | 4.29 in. |
| September | 51.8 °F | 72.8 °F | 4.14 in. |
| October | 40.5 °F | 61.3 °F | 4.58 in. |
| November | 31.2 °F | 50.6 °F | 3.55 in. |
| December | 23.2 °F | 40.5 °F | 4.13 in. |
| Annual | 38.5 °F | 58.9 °F | 46.12 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 | Dfb - Humid Continental Mild Summer, Wet All Year |