| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 59e - Narragansett/Bristol Lowland |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 02302 - Brockton, MA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 20 | 28 | 37 | 46 | 55 | 61 | 60 | 52 | 41 | 33 | 24 | 40 |
| Avg Max Temp (°F) | 37 | 39 | 47 | 57 | 69 | 77 | 83 | 81 | 73 | 63 | 52 | 42 | 60 |
| Avg Precip (In.) | 4.32 | 3.7 | 4.42 | 4.22 | 3.57 | 3.52 | 3.63 | 4.24 | 4.03 | 4.25 | 4.51 | 4.36 | 48.78 |