Concord, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 31 °F (low) to 53.3 °F (high). Annual precipitation averages 42.1 Inches. Concord is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.2 °F | 25.4 °F | 2.53 in. |
| February | 5.0 °F | 28.9 °F | 2.21 in. |
| March | 15.5 °F | 38.2 °F | 2.5 in. |
| April | 29.1 °F | 52.1 °F | 3.25 in. |
| May | 40.7 °F | 65.7 °F | 4.11 in. |
| June | 50.2 °F | 74.1 °F | 4.28 in. |
| July | 55.1 °F | 78.7 °F | 4.48 in. |
| August | 53.3 °F | 77.3 °F | 4.2 in. |
| September | 45.6 °F | 69.7 °F | 3.74 in. |
| October | 34.8 °F | 56.0 °F | 4.4 in. |
| November | 25.1 °F | 42.6 °F | 3.02 in. |
| December | 13.6 °F | 31.0 °F | 3.38 in. |
| Annual | 31 °F | 53.3 °F | 42.1 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°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 |