Warren, Rhode Island has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.3 °F (low) to 60.1 °F (high). Annual precipitation averages 50.7 Inches. Warren is located in USDA Plant Hardiness Zone 7a. 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 | 22.7 °F | 38.1 °F | 4.26 in. |
| February | 24.1 °F | 39.8 °F | 3.68 in. |
| March | 30.5 °F | 46.5 °F | 5.35 in. |
| April | 40.5 °F | 57.2 °F | 4.69 in. |
| May | 50.0 °F | 67.6 °F | 3.49 in. |
| June | 59.7 °F | 76.2 °F | 4.07 in. |
| July | 66.3 °F | 82.2 °F | 3.41 in. |
| August | 65.5 °F | 80.8 °F | 3.74 in. |
| September | 58.3 °F | 74.1 °F | 4.02 in. |
| October | 47.5 °F | 63.0 °F | 4.72 in. |
| November | 37.3 °F | 52.7 °F | 4.36 in. |
| December | 29.3 °F | 43.5 °F | 4.94 in. |
| Annual | 44.3 °F | 60.1 °F | 50.73 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 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |