Dudley, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.9 °F (low) to 58.6 °F (high). Annual precipitation averages 50 Inches. Dudley 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 | 16.9 °F | 34.8 °F | 3.84 in. |
| February | 18.0 °F | 37.2 °F | 3.28 in. |
| March | 25.5 °F | 44.9 °F | 4.46 in. |
| April | 35.7 °F | 57.3 °F | 4.44 in. |
| May | 46.1 °F | 68.1 °F | 3.6 in. |
| June | 55.4 °F | 76.1 °F | 4.34 in. |
| July | 61.3 °F | 81.3 °F | 3.99 in. |
| August | 59.5 °F | 79.6 °F | 4.34 in. |
| September | 52.4 °F | 72.7 °F | 4.3 in. |
| October | 41.1 °F | 60.8 °F | 4.98 in. |
| November | 31.4 °F | 50.2 °F | 3.87 in. |
| December | 23.2 °F | 40.0 °F | 4.59 in. |
| Annual | 38.9 °F | 58.6 °F | 50.03 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 |