Louisville, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.6 °C (low) to 24.6 °C (high). Annual precipitation averages 1207.3 Millimeters. Louisville is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.8 °C | 14.6 °C | 112.52 mm |
| February | 3.2 °C | 16.6 °C | 103.38 mm |
| March | 6.7 °C | 20.7 °C | 111.76 mm |
| April | 10.4 °C | 24.9 °C | 82.3 mm |
| May | 15.6 °C | 28.9 °C | 83.57 mm |
| June | 19.9 °C | 32 °C | 115.57 mm |
| July | 21.7 °C | 33.7 °C | 124.46 mm |
| August | 21.3 °C | 32.8 °C | 117.09 mm |
| September | 18.3 °C | 30.3 °C | 99.06 mm |
| October | 11.9 °C | 25.3 °C | 70.87 mm |
| November | 5.8 °C | 19.9 °C | 77.22 mm |
| December | 3.1 °C | 15.7 °C | 109.47 mm |
| Annual | 11.6 °C | 24.6 °C | 1207.27 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |