Killbuck, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.5 °F (low) to 61.3 °F (high). Annual precipitation averages 41.2 Inches. Killbuck 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 | 18.8 °F | 35.6 °F | 3.03 in. |
| February | 19.9 °F | 38.7 °F | 2.31 in. |
| March | 27.4 °F | 48.5 °F | 3.24 in. |
| April | 37.1 °F | 62.1 °F | 3.86 in. |
| May | 47.9 °F | 71.9 °F | 4.12 in. |
| June | 57.2 °F | 80.4 °F | 4.91 in. |
| July | 60.7 °F | 83.7 °F | 4.11 in. |
| August | 59.0 °F | 82.5 °F | 3.55 in. |
| September | 51.2 °F | 76.2 °F | 3.19 in. |
| October | 39.8 °F | 64.6 °F | 3.04 in. |
| November | 30.9 °F | 51.5 °F | 2.9 in. |
| December | 24.0 °F | 40.3 °F | 2.98 in. |
| Annual | 39.5 °F | 61.3 °F | 41.24 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 |