West Warwick, Rhode Island has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 42.4 °F (low) to 60.1 °F (high). Annual precipitation averages 50.8 Inches. West Warwick is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 20.7 °F | 37.3 °F | 4.1 in. |
| February | 22.1 °F | 39.3 °F | 3.62 in. |
| March | 29.0 °F | 46.5 °F | 5.16 in. |
| April | 38.9 °F | 57.7 °F | 4.76 in. |
| May | 49.0 °F | 68.2 °F | 3.53 in. |
| June | 58.4 °F | 76.8 °F | 4.14 in. |
| July | 64.8 °F | 82.6 °F | 3.42 in. |
| August | 63.3 °F | 80.9 °F | 3.9 in. |
| September | 56.2 °F | 73.9 °F | 4.12 in. |
| October | 44.9 °F | 62.7 °F | 4.78 in. |
| November | 35.0 °F | 52.2 °F | 4.37 in. |
| December | 26.7 °F | 42.5 °F | 4.93 in. |
| Annual | 42.4 °F | 60.1 °F | 50.83 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |