Alamo, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54 °F (low) to 77.5 °F (high). Annual precipitation averages 46.6 Inches. Alamo 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 | 36.4 °F | 60.2 °F | 4.32 in. |
| February | 39.2 °F | 63.8 °F | 4.0 in. |
| March | 44.9 °F | 70.6 °F | 4.33 in. |
| April | 52.3 °F | 77.8 °F | 3.26 in. |
| May | 60.9 °F | 85.2 °F | 2.8 in. |
| June | 68.7 °F | 90.2 °F | 4.8 in. |
| July | 71.5 °F | 92.5 °F | 4.55 in. |
| August | 71.0 °F | 91.5 °F | 5.46 in. |
| September | 65.6 °F | 87.1 °F | 3.63 in. |
| October | 54.4 °F | 79.0 °F | 2.65 in. |
| November | 43.9 °F | 69.7 °F | 2.79 in. |
| December | 38.8 °F | 62.4 °F | 3.99 in. |
| Annual | 54 °F | 77.5 °F | 46.58 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |