Richmond, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 38.9 °F (low) to 57.5 °F (high). Annual precipitation averages 34.2 Inches. Richmond is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.1 °F | 30.8 °F | 2.46 in. |
| February | 16.7 °F | 33.3 °F | 1.87 in. |
| March | 24.7 °F | 43.0 °F | 2.11 in. |
| April | 35.4 °F | 55.7 °F | 3.11 in. |
| May | 46.7 °F | 68.3 °F | 3.71 in. |
| June | 56.5 °F | 78.2 °F | 3.4 in. |
| July | 61.2 °F | 82.5 °F | 3.4 in. |
| August | 59.9 °F | 80.3 °F | 3.23 in. |
| September | 52.8 °F | 74.1 °F | 3.14 in. |
| October | 41.9 °F | 60.6 °F | 2.81 in. |
| November | 31.6 °F | 47.6 °F | 2.65 in. |
| December | 23.0 °F | 35.8 °F | 2.33 in. |
| Annual | 38.9 °F | 57.5 °F | 34.22 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |