Lexington, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.3 °C (low) to 23 °C (high). Annual precipitation averages 1244.9 Millimeters. Lexington 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. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.3 °C | 12.6 °C | 109.47 mm |
| February | 1.7 °C | 14.6 °C | 113.79 mm |
| March | 5.1 °C | 18.9 °C | 116.33 mm |
| April | 9.3 °C | 23.3 °C | 90.68 mm |
| May | 14.3 °C | 27.2 °C | 82.3 mm |
| June | 18.9 °C | 30.9 °C | 122.94 mm |
| July | 20.8 °C | 32.4 °C | 102.36 mm |
| August | 20.3 °C | 31.7 °C | 116.33 mm |
| September | 16.9 °C | 29 °C | 104.14 mm |
| October | 10.5 °C | 23.8 °C | 77.98 mm |
| November | 4.4 °C | 18.2 °C | 90.17 mm |
| December | 1.6 °C | 13.7 °C | 118.36 mm |
| Annual | 10.3 °C | 23 °C | 1244.85 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |