Rapid City, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.2 °F (low) to 54.5 °F (high). Annual precipitation averages 33.9 Inches. Rapid City is located in USDA Plant Hardiness Zone 6a. 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 | 14.6 °F | 28.0 °F | 2.18 in. |
| February | 13.6 °F | 29.8 °F | 1.66 in. |
| March | 20.6 °F | 39.3 °F | 1.88 in. |
| April | 32.2 °F | 52.3 °F | 3.05 in. |
| May | 43.1 °F | 65.4 °F | 3.14 in. |
| June | 53.4 °F | 75.1 °F | 3.21 in. |
| July | 57.8 °F | 79.4 °F | 2.95 in. |
| August | 56.5 °F | 78.1 °F | 3.16 in. |
| September | 49.8 °F | 71.2 °F | 3.5 in. |
| October | 39.6 °F | 57.4 °F | 3.97 in. |
| November | 30.7 °F | 44.5 °F | 2.88 in. |
| December | 22.1 °F | 33.5 °F | 2.36 in. |
| Annual | 36.2 °F | 54.5 °F | 33.94 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |