New Bedford, Massachusetts has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.7 °C (low) to 15.5 °C (high). Annual precipitation averages 1308.1 Millimeters. New Bedford is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.6 °C | 3.5 °C | 113.28 mm |
| February | -4.2 °C | 4.3 °C | 96.77 mm |
| March | -1.2 °C | 7.6 °C | 142.24 mm |
| April | 4.2 °C | 13.5 °C | 115.06 mm |
| May | 9.6 °C | 18.9 °C | 90.68 mm |
| June | 14.9 °C | 24.2 °C | 99.31 mm |
| July | 18.7 °C | 27.7 °C | 83.82 mm |
| August | 17.7 °C | 27.1 °C | 98.81 mm |
| September | 14.4 °C | 23.4 °C | 100.08 mm |
| October | 8.6 °C | 17.3 °C | 118.87 mm |
| November | 3.5 °C | 11.6 °C | 116.33 mm |
| December | -1.3 °C | 6.6 °C | 132.84 mm |
| Annual | 6.7 °C | 15.5 °C | 1308.09 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |