| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| Average First Frost Date: | October 21 - 31 |
| Average Last Frost Date: | April 21 - 30 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 59c - Southern New England Coastal Plains and Hills |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 01930 - Gloucester, MA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 22 | 29 | 37 | 47 | 56 | 62 | 61 | 55 | 44 | 36 | 26 | 41 |
| Avg Max Temp (°F) | 35 | 37 | 44 | 55 | 64 | 73 | 78 | 77 | 69 | 59 | 50 | 40 | 57 |
| Avg Precip (In.) | 4.22 | 3.54 | 4.25 | 4.34 | 3.55 | 3.63 | 3.46 | 3.4 | 3.87 | 4.22 | 4.69 | 4.27 | 47.43 |