Donalsonville, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.5 °C (low) to 25.8 °C (high). Annual precipitation averages 1433.6 Millimeters. Donalsonville is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.9 °C | 16.4 °C | 128.78 mm |
| February | 5.7 °C | 18.6 °C | 124.97 mm |
| March | 8.8 °C | 22.5 °C | 142.24 mm |
| April | 12.7 °C | 26 °C | 117.35 mm |
| May | 17.6 °C | 30.1 °C | 81.79 mm |
| June | 21.4 °C | 32.4 °C | 136.91 mm |
| July | 22.4 °C | 33.1 °C | 144.27 mm |
| August | 22.4 °C | 33 °C | 141.99 mm |
| September | 19.9 °C | 30.9 °C | 126.75 mm |
| October | 14.1 °C | 27.1 °C | 72.39 mm |
| November | 8.1 °C | 21.7 °C | 95.25 mm |
| December | 5.3 °C | 17.7 °C | 120.9 mm |
| Annual | 13.5 °C | 25.8 °C | 1433.59 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°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 |