Rehoboth, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 6 °C (low) to 15.7 °C (high). Annual precipitation averages 1295.6 Millimeters. Rehoboth 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.1 °C | 3.2 °C | 108.2 mm |
| February | -5.2 °C | 4.2 °C | 92.71 mm |
| March | -1.5 °C | 8.1 °C | 130.56 mm |
| April | 4.1 °C | 14.2 °C | 118.36 mm |
| May | 9.3 °C | 20 °C | 90.93 mm |
| June | 14.8 °C | 24.8 °C | 104.65 mm |
| July | 18.2 °C | 28.1 °C | 89.66 mm |
| August | 17.5 °C | 27.3 °C | 96.77 mm |
| September | 13.6 °C | 23.5 °C | 103.63 mm |
| October | 7.3 °C | 17.2 °C | 123.7 mm |
| November | 2 °C | 11.4 °C | 111.25 mm |
| December | -2.6 °C | 6.2 °C | 125.22 mm |
| Annual | 6 °C | 15.7 °C | 1295.64 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 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 |