Summitville, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 40.2 °F (low) to 61.3 °F (high). Annual precipitation averages 41 Inches. Summitville 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 | 19.1 °F | 35.6 °F | 3.08 in. |
| February | 20.4 °F | 38.7 °F | 2.44 in. |
| March | 27.8 °F | 48.6 °F | 3.17 in. |
| April | 38.2 °F | 61.8 °F | 3.66 in. |
| May | 48.1 °F | 71.8 °F | 4.0 in. |
| June | 57.2 °F | 80.1 °F | 4.26 in. |
| July | 61.1 °F | 83.6 °F | 4.08 in. |
| August | 59.2 °F | 82.7 °F | 3.55 in. |
| September | 52.6 °F | 76.6 °F | 3.7 in. |
| October | 41.3 °F | 64.3 °F | 3.09 in. |
| November | 32.4 °F | 51.3 °F | 2.83 in. |
| December | 24.8 °F | 40.4 °F | 3.12 in. |
| Annual | 40.2 °F | 61.3 °F | 40.98 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |