Woonsocket, Rhode Island has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 40.8 °F (low) to 60.5 °F (high). Annual precipitation averages 51.1 Inches. Woonsocket 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 | 18.9 °F | 37.1 °F | 4.11 in. |
| February | 20.4 °F | 39.5 °F | 3.55 in. |
| March | 27.7 °F | 46.7 °F | 4.83 in. |
| April | 37.8 °F | 58.6 °F | 4.63 in. |
| May | 47.7 °F | 69.1 °F | 3.6 in. |
| June | 57.1 °F | 77.6 °F | 4.31 in. |
| July | 63.2 °F | 83.2 °F | 3.64 in. |
| August | 61.6 °F | 81.8 °F | 4.04 in. |
| September | 54.2 °F | 74.8 °F | 4.09 in. |
| October | 42.5 °F | 63.3 °F | 5.06 in. |
| November | 33.2 °F | 52.4 °F | 4.14 in. |
| December | 24.9 °F | 42.3 °F | 5.07 in. |
| Annual | 40.8 °F | 60.5 °F | 51.07 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 6a : -10°F to -5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |