Rock Spring, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.3 °C (low) to 21.6 °C (high). Annual precipitation averages 1386.6 Millimeters. Rock Spring 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 | -1.2 °C | 10 °C | 129.79 mm |
| February | 0.4 °C | 12.4 °C | 126.49 mm |
| March | 3.9 °C | 17.1 °C | 137.16 mm |
| April | 8.2 °C | 22.2 °C | 120.65 mm |
| May | 13.4 °C | 26.1 °C | 104.39 mm |
| June | 18.1 °C | 29.8 °C | 100.58 mm |
| July | 19.9 °C | 31.4 °C | 109.22 mm |
| August | 19.4 °C | 31.3 °C | 92.71 mm |
| September | 16 °C | 28.4 °C | 119.63 mm |
| October | 9.2 °C | 22.7 °C | 86.11 mm |
| November | 3.1 °C | 16.4 °C | 116.08 mm |
| December | 0.6 °C | 11.4 °C | 143.76 mm |
| Annual | 9.3 °C | 21.6 °C | 1386.57 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 |