Kingston, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 42.1 °F (low) to 60.3 °F (high). Annual precipitation averages 53.1 Inches. Kingston is located in USDA Plant Hardiness Zone 7a. 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 | 21.9 °F | 38.5 °F | 4.51 in. |
| February | 22.9 °F | 40.2 °F | 4.11 in. |
| March | 28.7 °F | 46.5 °F | 5.75 in. |
| April | 37.7 °F | 57.1 °F | 4.68 in. |
| May | 47.4 °F | 67.0 °F | 3.79 in. |
| June | 57.0 °F | 76.3 °F | 3.94 in. |
| July | 63.5 °F | 82.3 °F | 3.53 in. |
| August | 62.1 °F | 80.7 °F | 3.7 in. |
| September | 55.3 °F | 74.1 °F | 4.21 in. |
| October | 45.1 °F | 63.2 °F | 4.97 in. |
| November | 35.9 °F | 53.2 °F | 4.72 in. |
| December | 28.0 °F | 44.0 °F | 5.15 in. |
| Annual | 42.1 °F | 60.3 °F | 53.06 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |