Oak Hill, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.7 °F (low) to 56.2 °F (high). Annual precipitation averages 48.4 Inches. Oak Hill 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 | 16.9 °F | 32.3 °F | 3.52 in. |
| February | 18.1 °F | 34.8 °F | 3.54 in. |
| March | 26.2 °F | 41.9 °F | 4.24 in. |
| April | 36.4 °F | 53.3 °F | 4.39 in. |
| May | 46.3 °F | 63.7 °F | 3.6 in. |
| June | 55.8 °F | 73.4 °F | 4.25 in. |
| July | 61.7 °F | 79.1 °F | 3.59 in. |
| August | 60.9 °F | 78.4 °F | 3.4 in. |
| September | 53.5 °F | 71.3 °F | 3.85 in. |
| October | 42.8 °F | 59.3 °F | 5.16 in. |
| November | 33.5 °F | 48.3 °F | 4.27 in. |
| December | 23.9 °F | 38.3 °F | 4.63 in. |
| Annual | 39.7 °F | 56.2 °F | 48.44 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 | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |