Melvin, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.1 °F (low) to 56.7 °F (high). Annual precipitation averages 32.2 Inches. Melvin 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.1 °F | 29.7 °F | 1.98 in. |
| February | 14.9 °F | 32.3 °F | 1.67 in. |
| March | 23.4 °F | 42.0 °F | 1.96 in. |
| April | 33.7 °F | 55.1 °F | 3.0 in. |
| May | 45.1 °F | 67.5 °F | 3.5 in. |
| June | 54.5 °F | 77.5 °F | 3.36 in. |
| July | 58.9 °F | 81.6 °F | 3.27 in. |
| August | 57.3 °F | 79.4 °F | 3.13 in. |
| September | 50.0 °F | 73.7 °F | 3.03 in. |
| October | 40.2 °F | 60.4 °F | 2.83 in. |
| November | 30.2 °F | 46.8 °F | 2.46 in. |
| December | 21.7 °F | 34.9 °F | 2.01 in. |
| Annual | 37.1 °F | 56.7 °F | 32.2 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |