Morrisville, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.5 °F (low) to 54 °F (high). Annual precipitation averages 40.4 Inches. 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 | 5.8 °F | 26.1 °F | 2.86 in. |
| February | 6.6 °F | 29.2 °F | 2.51 in. |
| March | 17.0 °F | 38.3 °F | 2.8 in. |
| April | 30.7 °F | 52.3 °F | 3.26 in. |
| May | 42.4 °F | 65.8 °F | 3.36 in. |
| June | 51.6 °F | 74.5 °F | 3.94 in. |
| July | 56.5 °F | 79.4 °F | 4.43 in. |
| August | 54.6 °F | 78.2 °F | 3.76 in. |
| September | 47.5 °F | 71.0 °F | 3.06 in. |
| October | 36.2 °F | 56.7 °F | 4.11 in. |
| November | 26.3 °F | 43.9 °F | 3.02 in. |
| December | 15.1 °F | 32.0 °F | 3.33 in. |
| Annual | 32.5 °F | 54 °F | 40.44 in. |
| 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 : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |