Marshfield Hills, Massachusetts has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.1 °C (low) to 15.3 °C (high). Annual precipitation averages 1321.1 Millimeters. Marshfield Hills 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 | -5.3 °C | 3.1 °C | 109.98 mm |
| February | -4.7 °C | 4.2 °C | 101.35 mm |
| March | -1.3 °C | 7.6 °C | 140.97 mm |
| April | 3.8 °C | 13.5 °C | 117.35 mm |
| May | 9.2 °C | 19.2 °C | 92.96 mm |
| June | 14.4 °C | 24.3 °C | 97.79 mm |
| July | 17.9 °C | 27.6 °C | 88.14 mm |
| August | 17.2 °C | 26.7 °C | 93.47 mm |
| September | 13.6 °C | 23.1 °C | 101.85 mm |
| October | 7.9 °C | 17 °C | 131.32 mm |
| November | 2.7 °C | 11.3 °C | 116.33 mm |
| December | -1.9 °C | 6.2 °C | 129.54 mm |
| Annual | 6.1 °C | 15.3 °C | 1321.05 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |