Seekonk, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 6.2 °C (low) to 15.7 °C (high). Annual precipitation averages 1300.5 Millimeters. Seekonk 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 | -5.8 °C | 3.3 °C | 107.7 mm |
| February | -5.1 °C | 4.3 °C | 93.73 mm |
| March | -1.2 °C | 8.1 °C | 129.54 mm |
| April | 4.3 °C | 14.2 °C | 120.9 mm |
| May | 9.6 °C | 20 °C | 90.17 mm |
| June | 15.1 °C | 24.7 °C | 107.44 mm |
| July | 18.5 °C | 28.1 °C | 88.9 mm |
| August | 17.8 °C | 27.3 °C | 98.04 mm |
| September | 13.8 °C | 23.4 °C | 105.16 mm |
| October | 7.6 °C | 17.2 °C | 122.17 mm |
| November | 2.2 °C | 11.4 °C | 111.25 mm |
| December | -2.4 °C | 6.2 °C | 125.48 mm |
| Annual | 6.2 °C | 15.7 °C | 1300.48 mm |
| 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 : -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 | Dfb - Humid Continental Mild Summer, Wet All Year |