Moretown, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.1 °C (low) to 10.8 °C (high). Annual precipitation averages 1223.5 Millimeters. Moretown is located in USDA Plant Hardiness Zone 4b. 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 | -13.8 °C | -4.4 °C | 82.04 mm |
| February | -13.5 °C | -2.6 °C | 70.61 mm |
| March | -8.3 °C | 2.8 °C | 90.68 mm |
| April | -1.6 °C | 9.9 °C | 100.08 mm |
| May | 6.2 °C | 17.4 °C | 98.04 mm |
| June | 10.3 °C | 21.9 °C | 123.44 mm |
| July | 13.3 °C | 24.5 °C | 126.24 mm |
| August | 12.4 °C | 23.7 °C | 114.3 mm |
| September | 8.3 °C | 19.8 °C | 96.52 mm |
| October | 2.2 °C | 12.4 °C | 125.48 mm |
| November | -3.7 °C | 4.9 °C | 91.19 mm |
| December | -10.3 °C | -1.3 °C | 104.9 mm |
| Annual | 0.1 °C | 10.8 °C | 1223.52 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 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 |