Bradford, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.4 °C (low) to 13.5 °C (high). Annual precipitation averages 937 Millimeters. 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 | -13.9 °C | -1.6 °C | 58.17 mm |
| February | -13.6 °C | 0.2 °C | 49.02 mm |
| March | -8.2 °C | 5.2 °C | 60.2 mm |
| April | -0.9 °C | 12.7 °C | 67.56 mm |
| May | 5.6 °C | 19.9 °C | 81.53 mm |
| June | 10.7 °C | 24.6 °C | 102.36 mm |
| July | 14 °C | 27.4 °C | 98.81 mm |
| August | 12.7 °C | 26.6 °C | 96.27 mm |
| September | 8.6 °C | 22.5 °C | 88.65 mm |
| October | 2.1 °C | 14.8 °C | 98.3 mm |
| November | -3 °C | 7.9 °C | 66.55 mm |
| December | -8.9 °C | 1.4 °C | 69.6 mm |
| Annual | 0.4 °C | 13.5 °C | 937.02 mm |
| 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 : -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 |