Montague, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.8 °F (low) to 58.8 °F (high). Annual precipitation averages 48.6 Inches. Montague is located in USDA Plant Hardiness Zone 6a. 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 | 13.3 °F | 32.8 °F | 3.53 in. |
| February | 14.6 °F | 36.2 °F | 3.13 in. |
| March | 23.4 °F | 44.6 °F | 3.76 in. |
| April | 34.0 °F | 57.9 °F | 3.89 in. |
| May | 45.0 °F | 69.4 °F | 3.72 in. |
| June | 54.7 °F | 78.1 °F | 4.58 in. |
| July | 60.0 °F | 83.3 °F | 4.25 in. |
| August | 58.1 °F | 81.6 °F | 4.41 in. |
| September | 50.1 °F | 74.3 °F | 4.53 in. |
| October | 38.6 °F | 60.8 °F | 4.93 in. |
| November | 29.0 °F | 48.8 °F | 3.66 in. |
| December | 20.5 °F | 38.2 °F | 4.2 in. |
| Annual | 36.8 °F | 58.8 °F | 48.59 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 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |