Bradford, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 32.8 °F (low) to 56.3 °F (high). Annual precipitation averages 36.9 Inches. Bradford is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 7.0 °F | 29.1 °F | 2.29 in. |
| February | 7.5 °F | 32.4 °F | 1.93 in. |
| March | 17.3 °F | 41.3 °F | 2.37 in. |
| April | 30.3 °F | 54.9 °F | 2.66 in. |
| May | 42.1 °F | 67.9 °F | 3.21 in. |
| June | 51.2 °F | 76.3 °F | 4.03 in. |
| July | 57.2 °F | 81.4 °F | 3.89 in. |
| August | 54.9 °F | 79.9 °F | 3.79 in. |
| September | 47.4 °F | 72.5 °F | 3.49 in. |
| October | 35.8 °F | 58.7 °F | 3.87 in. |
| November | 26.6 °F | 46.2 °F | 2.62 in. |
| December | 15.9 °F | 34.5 °F | 2.74 in. |
| Annual | 32.8 °F | 56.3 °F | 36.89 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |