Montgomery, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.1 °F (low) to 58 °F (high). Annual precipitation averages 38 Inches. Montgomery 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 | 16.3 °F | 30.8 °F | 2.45 in. |
| February | 17.5 °F | 33.9 °F | 2.12 in. |
| March | 25.7 °F | 44.7 °F | 2.44 in. |
| April | 36.7 °F | 57.8 °F | 3.53 in. |
| May | 48.6 °F | 69.3 °F | 4.19 in. |
| June | 58.3 °F | 78.7 °F | 3.9 in. |
| July | 61.2 °F | 82.3 °F | 3.72 in. |
| August | 59.3 °F | 80.3 °F | 3.93 in. |
| September | 51.8 °F | 74.2 °F | 3.28 in. |
| October | 40.9 °F | 61.3 °F | 3.08 in. |
| November | 30.9 °F | 47.5 °F | 2.94 in. |
| December | 22.5 °F | 35.6 °F | 2.37 in. |
| Annual | 39.1 °F | 58 °F | 37.95 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |