Websterville, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.4 °C (low) to 11.2 °C (high). Annual precipitation averages 1067.6 Millimeters. Websterville 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.6 °C | -3.7 °C | 66.8 mm |
| February | -12.8 °C | -1.9 °C | 56.64 mm |
| March | -7.8 °C | 2.7 °C | 72.9 mm |
| April | -0.8 °C | 10.1 °C | 83.06 mm |
| May | 5.7 °C | 17.7 °C | 91.95 mm |
| June | 10.6 °C | 22.3 °C | 112.27 mm |
| July | 13.2 °C | 24.9 °C | 119.89 mm |
| August | 12.2 °C | 24.1 °C | 105.41 mm |
| September | 8.2 °C | 20 °C | 89.92 mm |
| October | 2.3 °C | 12.6 °C | 105.16 mm |
| November | -3.2 °C | 5.7 °C | 77.72 mm |
| December | -9.2 °C | -0.5 °C | 85.85 mm |
| Annual | 0.4 °C | 11.2 °C | 1067.57 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 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |