Canaan, Vermont has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.7 °C (low) to 11.1 °C (high). Annual precipitation averages 1058.9 Millimeters. Canaan is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.7 °C | -4.3 °C | 67.82 mm |
| February | -15.2 °C | -2.8 °C | 54.1 mm |
| March | -9.3 °C | 2.2 °C | 64.26 mm |
| April | -1.7 °C | 9.9 °C | 79.5 mm |
| May | 4.8 °C | 17.9 °C | 96.27 mm |
| June | 9.9 °C | 22.7 °C | 112.78 mm |
| July | 12.8 °C | 25 °C | 113.54 mm |
| August | 11.8 °C | 24.3 °C | 105.92 mm |
| September | 7.2 °C | 20.4 °C | 92.96 mm |
| October | 1.8 °C | 12.8 °C | 114.3 mm |
| November | -3.9 °C | 5.4 °C | 77.22 mm |
| December | -10.6 °C | -0.9 °C | 80.26 mm |
| Annual | -0.7 °C | 11.1 °C | 1058.93 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |