| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°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: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 59e - Narragansett/Bristol Lowland | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 02738 - Marion, MA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 21 | 29 | 38 | 48 | 57 | 63 | 63 | 54 | 43 | 35 | 26 | 41 |
| Avg Max Temp (°F) | 37 | 39 | 46 | 55 | 66 | 75 | 81 | 80 | 73 | 62 | 52 | 42 | 59 |
| Avg Precip (In.) | 4.57 | 3.7 | 4.51 | 4.39 | 3.7 | 3.63 | 3.42 | 4.16 | 3.99 | 4 | 4.53 | 4.51 | 49.1 |