East Greenwich, Rhode Island has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6 °C (low) to 15.5 °C (high). Annual precipitation averages 1289.1 Millimeters. East Greenwich 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 | -5.9 °C | 3.2 °C | 106.43 mm |
| February | -5.2 °C | 4.2 °C | 92.46 mm |
| March | -1.4 °C | 8.1 °C | 136.4 mm |
| April | 4 °C | 14 °C | 121.16 mm |
| May | 9.5 °C | 19.6 °C | 88.65 mm |
| June | 14.8 °C | 24.6 °C | 103.38 mm |
| July | 18.3 °C | 27.8 °C | 86.11 mm |
| August | 17.6 °C | 27.1 °C | 95 mm |
| September | 13.8 °C | 23.3 °C | 104.65 mm |
| October | 7.6 °C | 17.1 °C | 117.35 mm |
| November | 2 °C | 11.3 °C | 113.03 mm |
| December | -2.6 °C | 6.2 °C | 124.46 mm |
| Annual | 6 °C | 15.5 °C | 1289.08 mm |
| 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 : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |