Rutland, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.8 °C (low) to 13.2 °C (high). Annual precipitation averages 1268.2 Millimeters. 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 | -10 °C | -0.5 °C | 96.27 mm |
| February | -9.2 °C | 1.1 °C | 85.34 mm |
| March | -4.9 °C | 5.3 °C | 109.98 mm |
| April | 1.3 °C | 12.5 °C | 103.89 mm |
| May | 7 °C | 18.7 °C | 96.01 mm |
| June | 12.2 °C | 23.3 °C | 110.74 mm |
| July | 15.3 °C | 26.3 °C | 106.68 mm |
| August | 14.4 °C | 25.4 °C | 110.49 mm |
| September | 10.6 °C | 21.3 °C | 110.49 mm |
| October | 4.2 °C | 14.5 °C | 127.51 mm |
| November | -1.1 °C | 8.3 °C | 98.3 mm |
| December | -6.2 °C | 2.5 °C | 112.52 mm |
| Annual | 2.8 °C | 13.2 °C | 1268.22 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |