Americus, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.2 °C (low) to 24.7 °C (high). Annual precipitation averages 1297.2 Millimeters. Americus 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 | 2.4 °C | 14.9 °C | 118.11 mm |
| February | 3.9 °C | 16.9 °C | 117.09 mm |
| March | 7.2 °C | 21 °C | 126.24 mm |
| April | 11.3 °C | 24.8 °C | 110.74 mm |
| May | 16.3 °C | 29.1 °C | 78.99 mm |
| June | 20.4 °C | 31.9 °C | 117.09 mm |
| July | 21.8 °C | 33.1 °C | 132.08 mm |
| August | 21.5 °C | 32.5 °C | 107.19 mm |
| September | 18.7 °C | 30.2 °C | 107.44 mm |
| October | 12.4 °C | 25.7 °C | 68.58 mm |
| November | 6.7 °C | 20.3 °C | 86.87 mm |
| December | 3.9 °C | 16.2 °C | 126.75 mm |
| Annual | 12.2 °C | 24.7 °C | 1297.17 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 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |