Greensboro, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 30.5 °F (low) to 51.3 °F (high). Annual precipitation averages 47.6 Inches. Greensboro is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.0 °F | 23.5 °F | 3.11 in. |
| February | 4.9 °F | 26.9 °F | 2.67 in. |
| March | 15.1 °F | 35.7 °F | 3.1 in. |
| April | 28.9 °F | 49.5 °F | 3.72 in. |
| May | 40.6 °F | 63.6 °F | 4.29 in. |
| June | 49.5 °F | 72.2 °F | 4.88 in. |
| July | 54.4 °F | 76.9 °F | 4.8 in. |
| August | 52.4 °F | 75.4 °F | 4.68 in. |
| September | 45.0 °F | 67.9 °F | 3.94 in. |
| October | 34.7 °F | 54.0 °F | 4.82 in. |
| November | 24.2 °F | 40.6 °F | 3.6 in. |
| December | 12.8 °F | 29.4 °F | 4.03 in. |
| Annual | 30.5 °F | 51.3 °F | 47.64 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| 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 |