Ashford, Connecticut has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.6 °F (low) to 58.9 °F (high). Annual precipitation averages 47.5 Inches. Ashford 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 | 35.0 °F | 3.45 in. |
| February | 17.9 °F | 37.5 °F | 3.07 in. |
| March | 25.5 °F | 45.2 °F | 4.14 in. |
| April | 35.5 °F | 57.7 °F | 3.98 in. |
| May | 45.6 °F | 68.2 °F | 3.49 in. |
| June | 54.9 °F | 76.3 °F | 4.16 in. |
| July | 60.8 °F | 81.4 °F | 3.91 in. |
| August | 59.0 °F | 79.7 °F | 4.35 in. |
| September | 51.8 °F | 73.0 °F | 4.28 in. |
| October | 40.6 °F | 61.4 °F | 4.73 in. |
| November | 30.9 °F | 50.5 °F | 3.67 in. |
| December | 23.2 °F | 40.5 °F | 4.27 in. |
| Annual | 38.6 °F | 58.9 °F | 47.5 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 |