Rutland, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.1 °F (low) to 55.8 °F (high). Annual precipitation averages 49.9 Inches. Rutland is located in USDA Plant Hardiness Zone 6a. 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 | 14.0 °F | 31.1 °F | 3.79 in. |
| February | 15.5 °F | 33.9 °F | 3.36 in. |
| March | 23.1 °F | 41.5 °F | 4.33 in. |
| April | 34.3 °F | 54.5 °F | 4.09 in. |
| May | 44.6 °F | 65.6 °F | 3.78 in. |
| June | 54.0 °F | 74.0 °F | 4.36 in. |
| July | 59.6 °F | 79.4 °F | 4.2 in. |
| August | 58.0 °F | 77.7 °F | 4.35 in. |
| September | 51.0 °F | 70.4 °F | 4.35 in. |
| October | 39.6 °F | 58.1 °F | 5.02 in. |
| November | 30.0 °F | 46.9 °F | 3.87 in. |
| December | 20.9 °F | 36.5 °F | 4.43 in. |
| Annual | 37.1 °F | 55.8 °F | 49.93 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 6a : -10°F to -5°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 |