Plains, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53.5 °F (low) to 76 °F (high). Annual precipitation averages 50.2 Inches. Plains 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 | 36.3 °F | 58.5 °F | 4.64 in. |
| February | 38.8 °F | 62.3 °F | 4.43 in. |
| March | 44.5 °F | 69.7 °F | 4.89 in. |
| April | 51.6 °F | 76.2 °F | 4.05 in. |
| May | 60.7 °F | 83.8 °F | 2.95 in. |
| June | 67.8 °F | 88.8 °F | 4.77 in. |
| July | 70.5 °F | 90.7 °F | 5.24 in. |
| August | 69.9 °F | 89.9 °F | 4.27 in. |
| September | 64.9 °F | 85.6 °F | 4.04 in. |
| October | 54.0 °F | 77.6 °F | 2.58 in. |
| November | 43.8 °F | 68.2 °F | 3.31 in. |
| December | 38.9 °F | 60.9 °F | 5.06 in. |
| Annual | 53.5 °F | 76 °F | 50.23 in. |
| 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 : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |