Greenville, Rhode Island has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.1 °F (low) to 60.1 °F (high). Annual precipitation averages 51.9 Inches. Greenville is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.5 °F | 36.8 °F | 3.79 in. |
| February | 20.8 °F | 39.1 °F | 3.45 in. |
| March | 28.0 °F | 46.3 °F | 4.98 in. |
| April | 38.0 °F | 58.2 °F | 4.66 in. |
| May | 47.9 °F | 68.8 °F | 3.69 in. |
| June | 57.1 °F | 76.9 °F | 4.31 in. |
| July | 63.4 °F | 82.6 °F | 3.87 in. |
| August | 61.8 °F | 81.1 °F | 4.31 in. |
| September | 54.7 °F | 74.2 °F | 4.02 in. |
| October | 43.5 °F | 62.9 °F | 5.35 in. |
| November | 33.7 °F | 52.0 °F | 4.38 in. |
| December | 25.3 °F | 42.0 °F | 5.06 in. |
| Annual | 41.1 °F | 60.1 °F | 51.87 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |