Montague, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.9 °F (low) to 55.7 °F (high). Annual precipitation averages 36.7 Inches. Montague is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.5 °F | 30.3 °F | 2.61 in. |
| February | 18.8 °F | 32.5 °F | 2.01 in. |
| March | 25.0 °F | 41.6 °F | 2.19 in. |
| April | 35.1 °F | 54.3 °F | 3.6 in. |
| May | 45.6 °F | 65.9 °F | 3.69 in. |
| June | 55.2 °F | 75.2 °F | 3.45 in. |
| July | 59.8 °F | 79.1 °F | 3.25 in. |
| August | 59.0 °F | 78.0 °F | 3.35 in. |
| September | 51.7 °F | 71.5 °F | 3.2 in. |
| October | 41.5 °F | 59.1 °F | 3.89 in. |
| November | 32.4 °F | 45.9 °F | 3.02 in. |
| December | 24.5 °F | 35.3 °F | 2.48 in. |
| Annual | 38.9 °F | 55.7 °F | 36.74 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |