| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 71g - Eastern Highland Rim |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 42633 - Monticello, KY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 24 | 26 | 34 | 41 | 51 | 60 | 64 | 62 | 55 | 43 | 35 | 28 | 44 |
| Avg Max Temp (°F) | 43 | 49 | 58 | 67 | 75 | 83 | 86 | 85 | 80 | 69 | 58 | 48 | 67 |
| Avg Precip (In.) | 4.45 | 4.08 | 4.94 | 4.2 | 5.21 | 4.51 | 4.48 | 3.9 | 3.79 | 3.03 | 4.22 | 4.81 | 51.62 |