Rock Creek, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.9 °F (low) to 59.1 °F (high). Annual precipitation averages 44.1 Inches. Rock Creek 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 | 18.6 °F | 33.9 °F | 3.18 in. |
| February | 18.6 °F | 36.2 °F | 2.32 in. |
| March | 26.3 °F | 44.8 °F | 3.02 in. |
| April | 36.8 °F | 58.7 °F | 3.96 in. |
| May | 47.6 °F | 70.0 °F | 3.75 in. |
| June | 56.7 °F | 78.0 °F | 4.25 in. |
| July | 60.8 °F | 81.9 °F | 4.46 in. |
| August | 59.2 °F | 80.2 °F | 3.64 in. |
| September | 52.8 °F | 74.2 °F | 4.25 in. |
| October | 42.5 °F | 62.3 °F | 4.1 in. |
| November | 33.7 °F | 49.8 °F | 3.55 in. |
| December | 25.4 °F | 38.9 °F | 3.58 in. |
| Annual | 39.9 °F | 59.1 °F | 44.06 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 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |