Waterbury Center, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.5 °C (low) to 12.3 °C (high). Annual precipitation averages 1170.9 Millimeters. Waterbury Center is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.9 °C | -3.1 °C | 77.22 mm |
| February | -13.5 °C | -1.2 °C | 64.77 mm |
| March | -8 °C | 3.7 °C | 81.53 mm |
| April | -0.7 °C | 11.3 °C | 96.01 mm |
| May | 5.8 °C | 19.1 °C | 100.84 mm |
| June | 10.9 °C | 23.8 °C | 124.97 mm |
| July | 13.7 °C | 26.4 °C | 121.92 mm |
| August | 12.6 °C | 25.6 °C | 110.49 mm |
| September | 8.6 °C | 21.5 °C | 92.46 mm |
| October | 2.4 °C | 13.8 °C | 116.08 mm |
| November | -3 °C | 6.7 °C | 87.88 mm |
| December | -9.2 °C | 0.2 °C | 96.77 mm |
| Annual | 0.5 °C | 12.3 °C | 1170.94 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°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 |