Russell, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.4 °F (low) to 59.4 °F (high). Annual precipitation averages 51.4 Inches. Russell is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.4 °F | 33.8 °F | 3.59 in. |
| February | 16.6 °F | 36.7 °F | 3.31 in. |
| March | 25.2 °F | 45.1 °F | 4.1 in. |
| April | 36.1 °F | 58.6 °F | 4.18 in. |
| May | 46.7 °F | 70.1 °F | 4.01 in. |
| June | 55.8 °F | 78.2 °F | 4.68 in. |
| July | 61.2 °F | 83.4 °F | 4.32 in. |
| August | 59.4 °F | 81.5 °F | 4.45 in. |
| September | 51.5 °F | 74.2 °F | 4.77 in. |
| October | 40.2 °F | 62.0 °F | 5.33 in. |
| November | 30.7 °F | 50.2 °F | 3.95 in. |
| December | 22.0 °F | 39.2 °F | 4.68 in. |
| Annual | 38.4 °F | 59.4 °F | 51.37 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |