Burlington, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.7 °C (low) to 13.1 °C (high). Annual precipitation averages 984 Millimeters. Burlington 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.2 °C | -2.3 °C | 58.17 mm |
| February | -11.2 °C | -0.8 °C | 45.97 mm |
| March | -5.8 °C | 4.2 °C | 61.47 mm |
| April | 1.3 °C | 12.3 °C | 78.74 mm |
| May | 8.1 °C | 19.8 °C | 87.63 mm |
| June | 13.4 °C | 24.6 °C | 107.44 mm |
| July | 16.3 °C | 27.2 °C | 110.24 mm |
| August | 15.3 °C | 26.5 °C | 99.31 mm |
| September | 10.9 °C | 22.1 °C | 94.74 mm |
| October | 4.7 °C | 14.6 °C | 98.04 mm |
| November | -0.9 °C | 7.7 °C | 73.15 mm |
| December | -7.2 °C | 1.2 °C | 69.09 mm |
| Annual | 2.7 °C | 13.1 °C | 983.99 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |