Bellows Falls, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.9 °C (low) to 13.9 °C (high). Annual precipitation averages 1089.9 Millimeters. Bellows Falls is located in USDA Plant Hardiness Zone 5b. 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 | -11.7 °C | -0.8 °C | 79.76 mm |
| February | -11.1 °C | 1.2 °C | 66.29 mm |
| March | -6 °C | 5.6 °C | 83.31 mm |
| April | 0.6 °C | 12.9 °C | 82.55 mm |
| May | 6.8 °C | 19.8 °C | 88.65 mm |
| June | 12.2 °C | 24.8 °C | 98.81 mm |
| July | 15.1 °C | 27.7 °C | 102.87 mm |
| August | 13.9 °C | 26.9 °C | 96.52 mm |
| September | 9.7 °C | 22.8 °C | 96.01 mm |
| October | 3.1 °C | 15.2 °C | 114.81 mm |
| November | -2.1 °C | 8.4 °C | 85.34 mm |
| December | -7.3 °C | 2 °C | 95 mm |
| Annual | 1.9 °C | 13.9 °C | 1089.92 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |