Cincinnati, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.7 °F (low) to 65.5 °F (high). Annual precipitation averages 44.9 Inches. Cincinnati 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.6 °F | 40.4 °F | 3.41 in. |
| February | 26.0 °F | 44.6 °F | 2.95 in. |
| March | 33.2 °F | 54.2 °F | 4.02 in. |
| April | 43.2 °F | 66.5 °F | 4.5 in. |
| May | 53.3 °F | 75.4 °F | 4.84 in. |
| June | 62.5 °F | 83.8 °F | 4.41 in. |
| July | 66.1 °F | 86.8 °F | 3.99 in. |
| August | 64.6 °F | 86.2 °F | 3.47 in. |
| September | 56.4 °F | 80.2 °F | 3.08 in. |
| October | 44.8 °F | 68.6 °F | 3.23 in. |
| November | 34.4 °F | 55.0 °F | 3.38 in. |
| December | 28.7 °F | 44.5 °F | 3.65 in. |
| Annual | 44.7 °F | 65.5 °F | 44.93 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |