Rentz, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.6 °C (low) to 25 °C (high). Annual precipitation averages 1213.4 Millimeters. Rentz is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.9 °C | 15.1 °C | 114.3 mm |
| February | 3.4 °C | 17.2 °C | 107.95 mm |
| March | 6.6 °C | 21.1 °C | 113.03 mm |
| April | 10.6 °C | 25.2 °C | 88.14 mm |
| May | 15.5 °C | 29.3 °C | 70.87 mm |
| June | 19.8 °C | 32.1 °C | 120.65 mm |
| July | 21.6 °C | 33.7 °C | 120.9 mm |
| August | 21.3 °C | 32.9 °C | 126.49 mm |
| September | 18.1 °C | 30.4 °C | 97.79 mm |
| October | 11.8 °C | 25.7 °C | 68.83 mm |
| November | 5.9 °C | 20.4 °C | 75.44 mm |
| December | 3.1 °C | 16.3 °C | 108.97 mm |
| Annual | 11.6 °C | 25 °C | 1213.36 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |