Groveland, Massachusetts has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.2 °F (low) to 59.4 °F (high). Annual precipitation averages 48.5 Inches. Groveland is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.9 °F | 35.3 °F | 3.61 in. |
| February | 18.6 °F | 37.9 °F | 3.57 in. |
| March | 26.0 °F | 45.2 °F | 4.74 in. |
| April | 36.2 °F | 57.6 °F | 4.22 in. |
| May | 46.3 °F | 67.9 °F | 3.77 in. |
| June | 55.8 °F | 76.9 °F | 4.26 in. |
| July | 61.7 °F | 82.9 °F | 3.54 in. |
| August | 60.0 °F | 81.4 °F | 3.43 in. |
| September | 52.4 °F | 74.2 °F | 3.82 in. |
| October | 40.8 °F | 62.0 °F | 4.98 in. |
| November | 31.8 °F | 51.0 °F | 3.85 in. |
| December | 23.3 °F | 40.7 °F | 4.68 in. |
| Annual | 39.2 °F | 59.4 °F | 48.47 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |