| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°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. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 71d - Outer Bluegrass |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 40065 - Shelbyville, KY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 22 | 30 | 39 | 49 | 58 | 63 | 61 | 53 | 41 | 32 | 24 | 41 |
| Avg Max Temp (°F) | 40 | 46 | 56 | 66 | 76 | 84 | 87 | 86 | 79 | 69 | 56 | 44 | 66 |
| Avg Precip (In.) | 3.49 | 3.52 | 4.49 | 4.07 | 5.05 | 4.5 | 4.7 | 3.69 | 3.1 | 2.96 | 3.82 | 4.09 | 47.48 |