| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| Average First Frost Date: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 71d - Outer Bluegrass |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 40215 - Louisville, KY | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 28 | 37 | 46 | 56 | 65 | 69 | 68 | 61 | 49 | 39 | 30 | 48 |
| Avg Max Temp (°F) | 42 | 47 | 57 | 68 | 77 | 85 | 88 | 87 | 80 | 70 | 56 | 46 | 67 |
| Avg Precip (In.) | 3.24 | 3.18 | 4.32 | 4.09 | 4.79 | 3.85 | 4.24 | 3.43 | 3.13 | 2.79 | 3.76 | 3.74 | 44.57 |