| 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. 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 40067 - Simpsonville, KY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 21 | 24 | 33 | 41 | 51 | 59 | 64 | 62 | 55 | 43 | 34 | 26 | 43 |
| Avg Max Temp (°F) | 40 | 46 | 56 | 67 | 76 | 83 | 87 | 86 | 79 | 69 | 55 | 44 | 66 |
| Avg Precip (In.) | 3.36 | 3.43 | 4.42 | 4.1 | 4.98 | 4.4 | 4.51 | 3.62 | 3.13 | 2.92 | 3.81 | 4.01 | 46.71 |