| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | 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: | 71d - Outer Bluegrass |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 40391 - Winchester, KY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 23 | 26 | 34 | 42 | 52 | 61 | 65 | 63 | 56 | 45 | 36 | 28 | 44 |
| Avg Max Temp (°F) | 41 | 46 | 56 | 66 | 75 | 82 | 86 | 85 | 79 | 68 | 56 | 45 | 65 |
| Avg Precip (In.) | 3.4 | 3.42 | 4.31 | 3.87 | 4.81 | 4.37 | 4.5 | 3.79 | 3.3 | 2.9 | 3.58 | 4.09 | 46.34 |