Hiltonia, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12 °C (low) to 24.9 °C (high). Annual precipitation averages 1210.8 Millimeters. Hiltonia is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.2 °C | 15.3 °C | 101.85 mm |
| February | 3.6 °C | 17.2 °C | 96.52 mm |
| March | 6.9 °C | 21.1 °C | 99.31 mm |
| April | 10.9 °C | 25.2 °C | 79.76 mm |
| May | 15.9 °C | 29.1 °C | 80.52 mm |
| June | 20.3 °C | 32 °C | 138.68 mm |
| July | 22.1 °C | 33.4 °C | 129.03 mm |
| August | 21.7 °C | 32.5 °C | 138.94 mm |
| September | 18.8 °C | 30.1 °C | 99.57 mm |
| October | 12.4 °C | 25.7 °C | 75.69 mm |
| November | 6.3 °C | 20.3 °C | 72.64 mm |
| December | 3.4 °C | 16.4 °C | 98.3 mm |
| Annual | 12 °C | 24.9 °C | 1210.81 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| 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 |