Warrenton, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.9 °C (low) to 23.6 °C (high). Annual precipitation averages 1206.5 Millimeters. Warrenton 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 | 1.1 °C | 13.4 °C | 111.76 mm |
| February | 2.3 °C | 15.2 °C | 100.08 mm |
| March | 5.6 °C | 19.6 °C | 121.67 mm |
| April | 9.8 °C | 23.8 °C | 80.26 mm |
| May | 14.8 °C | 27.8 °C | 77.98 mm |
| June | 19.2 °C | 31.2 °C | 113.54 mm |
| July | 21.2 °C | 32.9 °C | 103.12 mm |
| August | 20.6 °C | 32.2 °C | 120.14 mm |
| September | 17.4 °C | 29.3 °C | 111.51 mm |
| October | 11.1 °C | 24.3 °C | 78.23 mm |
| November | 4.9 °C | 18.9 °C | 82.3 mm |
| December | 2.3 °C | 14.7 °C | 105.92 mm |
| Annual | 10.9 °C | 23.6 °C | 1206.51 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 |