| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°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: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 70d - Knobs-Lower Scioto Dissected Plateau |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 40336 - Irvine, KY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 23 | 25 | 33 | 41 | 51 | 60 | 64 | 63 | 56 | 43 | 35 | 27 | 43 |
| Avg Max Temp (°F) | 42 | 47 | 57 | 67 | 76 | 83 | 86 | 85 | 80 | 69 | 57 | 47 | 66 |
| Avg Precip (In.) | 3.52 | 3.51 | 4.28 | 3.85 | 4.84 | 4.38 | 4.58 | 3.9 | 3.53 | 2.93 | 3.72 | 4.15 | 47.2 |