Oak Hill, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.5 °C (low) to 12.4 °C (high). Annual precipitation averages 900.9 Millimeters. Oak Hill is located in USDA Plant Hardiness Zone 6b. 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 | -7.5 °C | -1.3 °C | 51.56 mm |
| February | -7.4 °C | -0.4 °C | 39.12 mm |
| March | -4.3 °C | 4.2 °C | 51.82 mm |
| April | 1.2 °C | 11.2 °C | 90.68 mm |
| May | 6.8 °C | 17.9 °C | 85.34 mm |
| June | 12 °C | 23.1 °C | 92.46 mm |
| July | 14.9 °C | 25.2 °C | 84.33 mm |
| August | 14.4 °C | 24.6 °C | 82.8 mm |
| September | 10.6 °C | 21.2 °C | 82.04 mm |
| October | 5 °C | 14.2 °C | 98.3 mm |
| November | 0.2 °C | 7.2 °C | 76.96 mm |
| December | -4.4 °C | 1.3 °C | 65.53 mm |
| Annual | 3.5 °C | 12.4 °C | 900.94 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |