Underhill Center, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.8 °C (low) to 11.9 °C (high). Annual precipitation averages 1256.5 Millimeters. Underhill Center is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.8 °C | -3.2 °C | 79.76 mm |
| February | -13.2 °C | -1.6 °C | 63.25 mm |
| March | -7.9 °C | 3.4 °C | 85.6 mm |
| April | -0.3 °C | 10.9 °C | 104.14 mm |
| May | 6.1 °C | 18.6 °C | 111.76 mm |
| June | 11.4 °C | 23.3 °C | 128.78 mm |
| July | 14.1 °C | 25.8 °C | 125.98 mm |
| August | 13.1 °C | 24.9 °C | 117.09 mm |
| September | 8.8 °C | 20.8 °C | 114.55 mm |
| October | 2.8 °C | 13.3 °C | 130.05 mm |
| November | -2.6 °C | 6.5 °C | 99.82 mm |
| December | -8.8 °C | 0.1 °C | 95.76 mm |
| Annual | 0.8 °C | 11.9 °C | 1256.54 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°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 |