Sagamore, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 43.3 °F (low) to 58.8 °F (high). Annual precipitation averages 50.4 Inches. Sagamore 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 | 23.0 °F | 38.9 °F | 4.34 in. |
| February | 23.9 °F | 39.8 °F | 3.86 in. |
| March | 29.6 °F | 45.4 °F | 5.14 in. |
| April | 38.6 °F | 54.7 °F | 4.56 in. |
| May | 48.3 °F | 64.6 °F | 3.62 in. |
| June | 57.8 °F | 73.5 °F | 3.71 in. |
| July | 64.6 °F | 79.5 °F | 3.02 in. |
| August | 63.6 °F | 78.0 °F | 3.7 in. |
| September | 57.1 °F | 72.0 °F | 4.23 in. |
| October | 46.6 °F | 62.0 °F | 4.97 in. |
| November | 37.2 °F | 53.0 °F | 4.11 in. |
| December | 29.1 °F | 44.3 °F | 5.09 in. |
| Annual | 43.3 °F | 58.8 °F | 50.35 in. |
| 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 : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |