Benson, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.9 °C (low) to 13.6 °C (high). Annual precipitation averages 1003.6 Millimeters. Benson is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.9 °C | -1.7 °C | 65.79 mm |
| February | -11.6 °C | 0 °C | 52.07 mm |
| March | -5.9 °C | 5 °C | 67.82 mm |
| April | 0.4 °C | 13.5 °C | 80.52 mm |
| May | 6.8 °C | 20.2 °C | 88.39 mm |
| June | 12.3 °C | 25.3 °C | 102.87 mm |
| July | 14.8 °C | 27.7 °C | 105.92 mm |
| August | 14.1 °C | 26.8 °C | 98.55 mm |
| September | 9.7 °C | 22.7 °C | 86.11 mm |
| October | 3.3 °C | 14.9 °C | 101.09 mm |
| November | -1.7 °C | 7.8 °C | 74.93 mm |
| December | -7.5 °C | 1.4 °C | 79.5 mm |
| Annual | 1.9 °C | 13.6 °C | 1003.56 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 |