Chatsworth, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.6 °C (low) to 22.1 °C (high). Annual precipitation averages 1447.6 Millimeters. Chatsworth is located in USDA Plant Hardiness Zone 8a. 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 | -0.6 °C | 10.5 °C | 129.29 mm |
| February | 0.7 °C | 12.8 °C | 123.95 mm |
| March | 4.3 °C | 17.4 °C | 136.65 mm |
| April | 8.6 °C | 22.4 °C | 126.24 mm |
| May | 13.8 °C | 26.7 °C | 113.54 mm |
| June | 18.4 °C | 30.2 °C | 128.27 mm |
| July | 20.3 °C | 32 °C | 127.25 mm |
| August | 19.7 °C | 31.7 °C | 105.16 mm |
| September | 16.1 °C | 28.9 °C | 116.08 mm |
| October | 9.4 °C | 23.2 °C | 85.09 mm |
| November | 3.4 °C | 16.9 °C | 117.35 mm |
| December | 1 °C | 12 °C | 138.68 mm |
| Annual | 9.6 °C | 22.1 °C | 1447.55 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 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |