Burlington, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.2 °C (low) to 15.4 °C (high). Annual precipitation averages 1253.2 Millimeters. Burlington is located in USDA Plant Hardiness Zone 6b. 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 | -8.2 °C | 1.9 °C | 97.79 mm |
| February | -7.2 °C | 3.4 °C | 89.92 mm |
| March | -3.1 °C | 7.5 °C | 119.63 mm |
| April | 2.7 °C | 14.4 °C | 107.95 mm |
| May | 8.2 °C | 20.2 °C | 94.23 mm |
| June | 13.4 °C | 25.2 °C | 107.7 mm |
| July | 16.7 °C | 28.4 °C | 96.77 mm |
| August | 15.9 °C | 27.6 °C | 95.76 mm |
| September | 11.7 °C | 23.7 °C | 96.77 mm |
| October | 5.3 °C | 16.8 °C | 122.94 mm |
| November | 0.1 °C | 10.8 °C | 101.35 mm |
| December | -4.6 °C | 5.1 °C | 122.43 mm |
| Annual | 4.2 °C | 15.4 °C | 1253.24 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |