| 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 7a: 0F to 5F | |
| 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: | 84a - Cape Cod and Islands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 02571 - Wareham, MA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 22 | 29 | 38 | 48 | 57 | 64 | 63 | 54 | 43 | 35 | 26 | 41 |
| Avg Max Temp (°F) | 37 | 38 | 46 | 55 | 66 | 74 | 80 | 79 | 72 | 62 | 52 | 42 | 59 |
| Avg Precip (In.) | 4.55 | 3.7 | 4.5 | 4.38 | 3.73 | 3.58 | 3.27 | 4.07 | 4.02 | 3.97 | 4.51 | 4.45 | 48.72 |