Richford, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.1 °F (low) to 54 °F (high). Annual precipitation averages 49.6 Inches. Richford is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.7 °F | 25.8 °F | 3.77 in. |
| February | 8.2 °F | 28.5 °F | 2.96 in. |
| March | 18.8 °F | 38.0 °F | 3.32 in. |
| April | 32.1 °F | 52.6 °F | 3.76 in. |
| May | 44.2 °F | 66.6 °F | 4.32 in. |
| June | 53.3 °F | 75.0 °F | 4.43 in. |
| July | 58.0 °F | 79.1 °F | 5.46 in. |
| August | 56.3 °F | 77.8 °F | 4.76 in. |
| September | 48.9 °F | 70.6 °F | 4.27 in. |
| October | 38.4 °F | 57.2 °F | 4.87 in. |
| November | 28.0 °F | 44.4 °F | 3.62 in. |
| December | 15.9 °F | 32.4 °F | 4.08 in. |
| Annual | 34.1 °F | 54 °F | 49.62 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| 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 |