Adams, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.7 °F (low) to 56.5 °F (high). Annual precipitation averages 48.2 Inches. Adams is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 13.9 °F | 31.1 °F | 2.94 in. |
| February | 15.0 °F | 33.7 °F | 2.36 in. |
| March | 23.2 °F | 41.9 °F | 2.89 in. |
| April | 34.3 °F | 55.6 °F | 4.24 in. |
| May | 44.9 °F | 67.3 °F | 4.3 in. |
| June | 53.8 °F | 75.8 °F | 4.54 in. |
| July | 58.5 °F | 80.1 °F | 5.52 in. |
| August | 57.1 °F | 78.3 °F | 4.94 in. |
| September | 49.9 °F | 71.4 °F | 5.08 in. |
| October | 38.8 °F | 59.4 °F | 4.45 in. |
| November | 29.7 °F | 47.4 °F | 3.53 in. |
| December | 21.1 °F | 36.4 °F | 3.38 in. |
| Annual | 36.7 °F | 56.5 °F | 48.17 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |