Gloucester, Massachusetts has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.1 °F (low) to 57.3 °F (high). Annual precipitation averages 49.8 Inches. Gloucester 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.4 °F | 36.5 °F | 4.2 in. |
| February | 23.5 °F | 38.1 °F | 3.97 in. |
| March | 29.8 °F | 43.7 °F | 5.14 in. |
| April | 39.1 °F | 54.0 °F | 4.36 in. |
| May | 48.4 °F | 63.5 °F | 3.8 in. |
| June | 57.6 °F | 72.7 °F | 4.08 in. |
| July | 63.9 °F | 78.0 °F | 3.5 in. |
| August | 62.9 °F | 77.2 °F | 3.32 in. |
| September | 56.8 °F | 70.4 °F | 3.75 in. |
| October | 46.7 °F | 60.5 °F | 4.78 in. |
| November | 37.3 °F | 50.8 °F | 3.96 in. |
| December | 28.5 °F | 42.0 °F | 4.97 in. |
| Annual | 43.1 °F | 57.3 °F | 49.83 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |