Pembroke, Massachusetts has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.1 °C (low) to 15.8 °C (high). Annual precipitation averages 1351.8 Millimeters. Pembroke 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 | 3.2 °C | 114.05 mm |
| February | -5.9 °C | 4.3 °C | 104.14 mm |
| March | -2.1 °C | 8.1 °C | 145.29 mm |
| April | 3.2 °C | 14.4 °C | 120.9 mm |
| May | 8.6 °C | 20.1 °C | 95.76 mm |
| June | 13.8 °C | 25.1 °C | 99.82 mm |
| July | 17.3 °C | 28.3 °C | 88.65 mm |
| August | 16.5 °C | 27.6 °C | 92.96 mm |
| September | 12.6 °C | 23.7 °C | 104.39 mm |
| October | 6.4 °C | 17.4 °C | 130.56 mm |
| November | 1.2 °C | 11.6 °C | 120.4 mm |
| December | -3.4 °C | 6.3 °C | 134.87 mm |
| Annual | 5.1 °C | 15.8 °C | 1351.79 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |