Rutland, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.8 °C (low) to 13.3 °C (high). Annual precipitation averages 1023.9 Millimeters. Rutland is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.8 °C | -1.4 °C | 67.31 mm |
| February | -11.3 °C | 0.2 °C | 54.36 mm |
| March | -6.1 °C | 5.1 °C | 68.33 mm |
| April | 0.3 °C | 12.8 °C | 78.99 mm |
| May | 6.7 °C | 19.8 °C | 92.46 mm |
| June | 11.9 °C | 24.5 °C | 108.2 mm |
| July | 14.6 °C | 26.9 °C | 116.33 mm |
| August | 13.7 °C | 26 °C | 101.6 mm |
| September | 9.4 °C | 22 °C | 87.12 mm |
| October | 3.3 °C | 14.7 °C | 101.35 mm |
| November | -1.8 °C | 7.9 °C | 69.85 mm |
| December | -7.4 °C | 1.6 °C | 77.98 mm |
| Annual | 1.8 °C | 13.3 °C | 1023.88 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |