Vernon, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.7 °F (low) to 57.6 °F (high). Annual precipitation averages 33.5 Inches. Vernon 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 | 15.3 °F | 30.5 °F | 2.18 in. |
| February | 15.8 °F | 33.2 °F | 1.65 in. |
| March | 23.8 °F | 43.3 °F | 1.98 in. |
| April | 34.9 °F | 56.5 °F | 3.3 in. |
| May | 46.2 °F | 68.8 °F | 4.01 in. |
| June | 56.0 °F | 78.4 °F | 3.52 in. |
| July | 59.3 °F | 82.3 °F | 3.33 in. |
| August | 58.0 °F | 80.2 °F | 3.2 in. |
| September | 50.4 °F | 74.0 °F | 3.06 in. |
| October | 39.8 °F | 60.9 °F | 2.88 in. |
| November | 30.5 °F | 47.2 °F | 2.42 in. |
| December | 22.1 °F | 35.7 °F | 2.0 in. |
| Annual | 37.7 °F | 57.6 °F | 33.53 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 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |