Bourneville, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.7 °F (low) to 63.8 °F (high). Annual precipitation averages 43 Inches. Bourneville 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 21.7 °F | 38.6 °F | 3.17 in. |
| February | 23.6 °F | 42.0 °F | 3.2 in. |
| March | 30.9 °F | 51.8 °F | 3.99 in. |
| April | 41.1 °F | 64.7 °F | 4.13 in. |
| May | 51.9 °F | 74.2 °F | 4.57 in. |
| June | 60.6 °F | 82.4 °F | 4.42 in. |
| July | 63.8 °F | 85.0 °F | 3.91 in. |
| August | 61.6 °F | 84.3 °F | 3.27 in. |
| September | 54.1 °F | 78.8 °F | 3.06 in. |
| October | 42.8 °F | 66.7 °F | 3.09 in. |
| November | 32.9 °F | 53.6 °F | 2.95 in. |
| December | 26.9 °F | 42.9 °F | 3.22 in. |
| Annual | 42.7 °F | 63.8 °F | 42.98 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |