Hiawassee, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 44.2 °F (low) to 67.9 °F (high). Annual precipitation averages 58.5 Inches. Hiawassee is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.3 °F | 48.2 °F | 5.34 in. |
| February | 29.2 °F | 52.5 °F | 4.78 in. |
| March | 35.1 °F | 59.7 °F | 5.81 in. |
| April | 42.4 °F | 69.1 °F | 4.79 in. |
| May | 51.3 °F | 75.8 °F | 4.6 in. |
| June | 59.0 °F | 81.3 °F | 4.86 in. |
| July | 62.4 °F | 84.3 °F | 5.61 in. |
| August | 61.6 °F | 83.5 °F | 4.21 in. |
| September | 55.3 °F | 79.0 °F | 4.42 in. |
| October | 43.9 °F | 69.9 °F | 3.73 in. |
| November | 34.1 °F | 60.2 °F | 4.53 in. |
| December | 29.4 °F | 51.6 °F | 5.81 in. |
| Annual | 44.2 °F | 67.9 °F | 58.49 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |