Burlington, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.9 °F (low) to 55.6 °F (high). Annual precipitation averages 38.7 Inches. 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 | 10.1 °F | 27.9 °F | 2.29 in. |
| February | 11.8 °F | 30.6 °F | 1.81 in. |
| March | 21.5 °F | 39.5 °F | 2.42 in. |
| April | 34.4 °F | 54.1 °F | 3.1 in. |
| May | 46.6 °F | 67.7 °F | 3.45 in. |
| June | 56.1 °F | 76.2 °F | 4.23 in. |
| July | 61.3 °F | 80.9 °F | 4.34 in. |
| August | 59.5 °F | 79.7 °F | 3.91 in. |
| September | 51.6 °F | 71.8 °F | 3.73 in. |
| October | 40.4 °F | 58.2 °F | 3.86 in. |
| November | 30.4 °F | 45.8 °F | 2.88 in. |
| December | 19.1 °F | 34.2 °F | 2.72 in. |
| Annual | 36.9 °F | 55.6 °F | 38.74 in. |
| 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 : -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 |