Morrisville, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.3 °C (low) to 12.2 °C (high). Annual precipitation averages 1027.2 Millimeters. Morrisville 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 | -14.6 °C | -3.3 °C | 72.64 mm |
| February | -14.1 °C | -1.6 °C | 63.75 mm |
| March | -8.3 °C | 3.5 °C | 71.12 mm |
| April | -0.7 °C | 11.3 °C | 82.8 mm |
| May | 5.8 °C | 18.8 °C | 85.34 mm |
| June | 10.9 °C | 23.6 °C | 100.08 mm |
| July | 13.6 °C | 26.3 °C | 112.52 mm |
| August | 12.6 °C | 25.7 °C | 95.5 mm |
| September | 8.6 °C | 21.7 °C | 77.72 mm |
| October | 2.3 °C | 13.7 °C | 104.39 mm |
| November | -3.2 °C | 6.6 °C | 76.71 mm |
| December | -9.4 °C | 0 °C | 84.58 mm |
| Annual | 0.3 °C | 12.2 °C | 1027.15 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 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |