Salisbury, Connecticut has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.7 °C (low) to 15 °C (high). Annual precipitation averages 1176 Millimeters. Salisbury is located in USDA Plant Hardiness Zone 6a. 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 | -9.8 °C | 0.9 °C | 79.5 mm |
| February | -9 °C | 2.8 °C | 64.77 mm |
| March | -4.4 °C | 7.1 °C | 86.87 mm |
| April | 1.3 °C | 14.8 °C | 89.66 mm |
| May | 7.1 °C | 21.1 °C | 97.54 mm |
| June | 12.1 °C | 25.4 °C | 119.89 mm |
| July | 14.9 °C | 28.3 °C | 121.41 mm |
| August | 14.2 °C | 27.2 °C | 104.9 mm |
| September | 9.8 °C | 22.8 °C | 114.3 mm |
| October | 3.7 °C | 16.2 °C | 121.67 mm |
| November | -1.4 °C | 9.7 °C | 84.07 mm |
| December | -6 °C | 3.6 °C | 91.44 mm |
| Annual | 2.7 °C | 15 °C | 1176.02 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 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |