Bristol, 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 50.1 Inches. Bristol 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.1 °F | 37.9 °F | 4.24 in. |
| February | 24.3 °F | 39.8 °F | 3.69 in. |
| March | 30.6 °F | 46.7 °F | 5.46 in. |
| April | 40.4 °F | 57.2 °F | 4.65 in. |
| May | 49.9 °F | 67.4 °F | 3.43 in. |
| June | 59.6 °F | 76.1 °F | 3.9 in. |
| July | 66.2 °F | 82.1 °F | 3.29 in. |
| August | 65.0 °F | 80.9 °F | 3.66 in. |
| September | 58.4 °F | 74.3 °F | 3.86 in. |
| October | 47.3 °F | 62.9 °F | 4.68 in. |
| November | 37.7 °F | 52.4 °F | 4.22 in. |
| December | 29.4 °F | 43.3 °F | 4.97 in. |
| Annual | 44.3 °F | 60.1 °F | 50.05 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 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 |