| 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: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 71d - Outer Bluegrass |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 45211 - Cincinnati, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 21 | 24 | 33 | 41 | 51 | 60 | 65 | 63 | 56 | 44 | 35 | 26 | 43 |
| Avg Max Temp (°F) | 38 | 43 | 54 | 65 | 74 | 83 | 86 | 85 | 78 | 67 | 54 | 43 | 64 |
| Avg Precip (In.) | 2.98 | 2.62 | 3.83 | 3.93 | 4.76 | 4.06 | 3.78 | 3.66 | 3 | 2.91 | 3.53 | 3.17 | 42.23 |