Oak Hill, Ohio has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 43.3 °F (low) to 65.2 °F (high). Annual precipitation averages 44.1 Inches. Oak Hill is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.8 °F | 40.6 °F | 3.23 in. |
| February | 24.7 °F | 44.4 °F | 3.09 in. |
| March | 31.7 °F | 54.1 °F | 4.02 in. |
| April | 41.7 °F | 67.0 °F | 3.82 in. |
| May | 51.9 °F | 75.3 °F | 4.52 in. |
| June | 60.4 °F | 82.8 °F | 4.31 in. |
| July | 64.2 °F | 86.0 °F | 4.71 in. |
| August | 62.5 °F | 85.1 °F | 3.47 in. |
| September | 55.3 °F | 79.5 °F | 3.48 in. |
| October | 43.6 °F | 68.1 °F | 3.07 in. |
| November | 33.5 °F | 55.1 °F | 2.87 in. |
| December | 27.4 °F | 44.5 °F | 3.46 in. |
| Annual | 43.3 °F | 65.2 °F | 44.05 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |