| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 55d - Pre-Wisconsinan Drift Plains |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 45239 - Cincinnati, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 21 | 24 | 32 | 41 | 51 | 60 | 64 | 62 | 55 | 43 | 35 | 26 | 43 |
| Avg Max Temp (°F) | 38 | 43 | 54 | 65 | 74 | 82 | 86 | 85 | 78 | 67 | 54 | 43 | 64 |
| Avg Precip (In.) | 2.98 | 2.64 | 3.81 | 3.95 | 4.79 | 4.08 | 3.87 | 3.69 | 3 | 2.93 | 3.53 | 3.19 | 42.47 |