| 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 02360 - Plymouth, MA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 22 | 29 | 38 | 47 | 57 | 63 | 62 | 54 | 43 | 35 | 26 | 41 |
| Avg Max Temp (°F) | 38 | 39 | 47 | 57 | 67 | 76 | 82 | 80 | 73 | 63 | 52 | 42 | 60 |
| Avg Precip (In.) | 4.69 | 3.9 | 4.53 | 4.41 | 3.73 | 3.55 | 3.37 | 4.01 | 4.26 | 4.23 | 4.67 | 4.44 | 49.78 |