| 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. 11 - Oct. 20 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 71g - Eastern Highland Rim |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 42518 - Bronston, KY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 28 | 35 | 43 | 52 | 61 | 65 | 63 | 57 | 44 | 36 | 29 | 45 |
| Avg Max Temp (°F) | 43 | 49 | 58 | 68 | 76 | 83 | 86 | 85 | 79 | 69 | 57 | 48 | 67 |
| Avg Precip (In.) | 4.22 | 3.7 | 4.73 | 4.14 | 5.26 | 4.65 | 4.43 | 3.85 | 3.77 | 3.15 | 4.15 | 4.67 | 50.72 |