Dighton, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5.9 °C (low) to 15.8 °C (high). Annual precipitation averages 1295.4 Millimeters. Dighton 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 | -5.8 °C | 3.3 °C | 108.46 mm |
| February | -5.1 °C | 4.4 °C | 91.95 mm |
| March | -1.5 °C | 8.2 °C | 133.86 mm |
| April | 3.7 °C | 14.3 °C | 117.35 mm |
| May | 9.2 °C | 20.1 °C | 90.93 mm |
| June | 14.4 °C | 24.9 °C | 103.38 mm |
| July | 18 °C | 28.2 °C | 90.17 mm |
| August | 17.2 °C | 27.5 °C | 96.01 mm |
| September | 13.3 °C | 23.6 °C | 103.38 mm |
| October | 7.3 °C | 17.2 °C | 123.7 mm |
| November | 2 °C | 11.4 °C | 111.25 mm |
| December | -2.4 °C | 6.2 °C | 124.97 mm |
| Annual | 5.9 °C | 15.8 °C | 1295.41 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |