Knoxville, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 52.6 °F (low) to 76 °F (high). Annual precipitation averages 49.3 Inches. Knoxville 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 | 34.6 °F | 57.9 °F | 4.47 in. |
| February | 37.6 °F | 61.9 °F | 4.42 in. |
| March | 43.6 °F | 69.3 °F | 4.89 in. |
| April | 50.7 °F | 76.4 °F | 3.79 in. |
| May | 59.6 °F | 83.9 °F | 2.93 in. |
| June | 67.6 °F | 89.2 °F | 4.48 in. |
| July | 70.6 °F | 91.5 °F | 4.84 in. |
| August | 69.9 °F | 90.5 °F | 4.34 in. |
| September | 64.1 °F | 85.7 °F | 3.92 in. |
| October | 53.1 °F | 77.1 °F | 2.98 in. |
| November | 42.1 °F | 67.9 °F | 3.54 in. |
| December | 37.1 °F | 60.1 °F | 4.65 in. |
| Annual | 52.6 °F | 76 °F | 49.25 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |