Richmond, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.4 °F (low) to 55 °F (high). Annual precipitation averages 40.3 Inches. Richmond is located in USDA Plant Hardiness Zone 5a. 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 | 9.0 °F | 27.4 °F | 2.3 in. |
| February | 10.3 °F | 30.3 °F | 1.88 in. |
| March | 20.0 °F | 39.2 °F | 2.46 in. |
| April | 33.0 °F | 53.5 °F | 3.29 in. |
| May | 44.8 °F | 67.0 °F | 3.73 in. |
| June | 54.4 °F | 75.7 °F | 4.43 in. |
| July | 59.5 °F | 80.5 °F | 4.69 in. |
| August | 57.9 °F | 78.9 °F | 4.12 in. |
| September | 49.9 °F | 71.2 °F | 3.66 in. |
| October | 38.9 °F | 57.6 °F | 4.02 in. |
| November | 29.1 °F | 45.3 °F | 2.87 in. |
| December | 17.8 °F | 33.5 °F | 2.83 in. |
| Annual | 35.4 °F | 55 °F | 40.28 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 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |