Raynham Center, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5.1 °C (low) to 15.9 °C (high). Annual precipitation averages 1293.6 Millimeters. Raynham Center is located in USDA Plant Hardiness Zone 6b. 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 | -6.6 °C | 3.3 °C | 109.98 mm |
| February | -5.9 °C | 4.4 °C | 92.46 mm |
| March | -2.2 °C | 8.2 °C | 133.86 mm |
| April | 3.2 °C | 14.6 °C | 116.33 mm |
| May | 8.4 °C | 20.3 °C | 90.42 mm |
| June | 13.8 °C | 25.2 °C | 102.36 mm |
| July | 17.3 °C | 28.4 °C | 88.9 mm |
| August | 16.4 °C | 27.7 °C | 94.74 mm |
| September | 12.4 °C | 23.7 °C | 103.89 mm |
| October | 6.3 °C | 17.3 °C | 124.46 mm |
| November | 1.1 °C | 11.6 °C | 111 mm |
| December | -3.3 °C | 6.3 °C | 125.22 mm |
| Annual | 5.1 °C | 15.9 °C | 1293.62 mm |
| 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 6b : -20.6°C to -17.8°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 |