Weekapaug, Rhode Island has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 44.8 °F (low) to 58.8 °F (high). Annual precipitation averages 47.5 Inches. Weekapaug is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.5 °F | 38.5 °F | 3.96 in. |
| February | 25.5 °F | 39.8 °F | 3.48 in. |
| March | 31.4 °F | 45.4 °F | 5.02 in. |
| April | 40.2 °F | 54.8 °F | 4.51 in. |
| May | 49.1 °F | 63.8 °F | 3.41 in. |
| June | 58.7 °F | 72.8 °F | 3.69 in. |
| July | 65.3 °F | 79.1 °F | 2.94 in. |
| August | 64.9 °F | 78.2 °F | 3.56 in. |
| September | 59.1 °F | 72.8 °F | 3.46 in. |
| October | 49.0 °F | 62.7 °F | 4.61 in. |
| November | 39.3 °F | 53.2 °F | 4.04 in. |
| December | 31.0 °F | 44.4 °F | 4.77 in. |
| Annual | 44.8 °F | 58.8 °F | 47.45 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |