Louisville, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.3 °F (low) to 67.9 °F (high). Annual precipitation averages 49.1 Inches. Louisville is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.7 °F | 43.1 °F | 3.58 in. |
| February | 29.4 °F | 47.7 °F | 3.62 in. |
| March | 37.1 °F | 57.5 °F | 4.6 in. |
| April | 47.3 °F | 69.3 °F | 4.86 in. |
| May | 57.4 °F | 77.8 °F | 5.09 in. |
| June | 65.8 °F | 85.5 °F | 4.59 in. |
| July | 69.4 °F | 88.7 °F | 4.08 in. |
| August | 68.0 °F | 88.1 °F | 3.38 in. |
| September | 60.6 °F | 82.3 °F | 3.77 in. |
| October | 49.0 °F | 70.9 °F | 3.63 in. |
| November | 38.2 °F | 57.5 °F | 3.58 in. |
| December | 31.0 °F | 46.9 °F | 4.31 in. |
| Annual | 48.3 °F | 67.9 °F | 49.09 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |