Walthourville, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 55.6 °F (low) to 78.3 °F (high). Annual precipitation averages 50.7 Inches. Walthourville is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.3 °F | 62.2 °F | 3.84 in. |
| February | 40.9 °F | 65.5 °F | 3.59 in. |
| March | 47.0 °F | 72.1 °F | 3.88 in. |
| April | 53.6 °F | 78.8 °F | 3.27 in. |
| May | 62.0 °F | 85.5 °F | 3.53 in. |
| June | 69.5 °F | 90.4 °F | 6.15 in. |
| July | 72.2 °F | 92.7 °F | 5.85 in. |
| August | 71.9 °F | 91.3 °F | 6.82 in. |
| September | 67.5 °F | 86.8 °F | 4.34 in. |
| October | 57.0 °F | 79.4 °F | 3.75 in. |
| November | 46.3 °F | 71.0 °F | 2.24 in. |
| December | 41.0 °F | 64.3 °F | 3.43 in. |
| Annual | 55.6 °F | 78.3 °F | 50.69 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |