Peacham, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 31 °F (low) to 52.3 °F (high). Annual precipitation averages 44.7 Inches. Peacham 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.9 °F | 24.8 °F | 2.84 in. |
| February | 5.3 °F | 27.9 °F | 2.54 in. |
| March | 15.4 °F | 37.0 °F | 2.97 in. |
| April | 28.7 °F | 50.6 °F | 3.53 in. |
| May | 40.9 °F | 64.5 °F | 4.26 in. |
| June | 50.1 °F | 72.7 °F | 4.32 in. |
| July | 55.1 °F | 77.6 °F | 4.49 in. |
| August | 53.0 °F | 76.2 °F | 4.49 in. |
| September | 45.4 °F | 68.8 °F | 3.83 in. |
| October | 35.0 °F | 54.9 °F | 4.58 in. |
| November | 24.7 °F | 41.8 °F | 3.2 in. |
| December | 13.4 °F | 30.3 °F | 3.66 in. |
| Annual | 31 °F | 52.3 °F | 44.71 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 |