Mountain City, Georgia has a Temperate Oceanic Climate climate (Köppen classification: Cfb). Average annual temperatures range from 45 °F (low) to 67.8 °F (high). Annual precipitation averages 69.8 Inches. Mountain City 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.7 °F | 49.2 °F | 5.91 in. |
| February | 29.9 °F | 53.0 °F | 6.16 in. |
| March | 35.9 °F | 60.0 °F | 5.98 in. |
| April | 43.3 °F | 68.6 °F | 5.75 in. |
| May | 51.8 °F | 75.1 °F | 5.19 in. |
| June | 59.3 °F | 81.0 °F | 5.99 in. |
| July | 62.8 °F | 83.9 °F | 5.87 in. |
| August | 62.1 °F | 82.9 °F | 6.01 in. |
| September | 56.2 °F | 78.1 °F | 5.61 in. |
| October | 45.0 °F | 69.4 °F | 5.11 in. |
| November | 35.1 °F | 60.1 °F | 5.34 in. |
| December | 30.3 °F | 52.1 °F | 6.83 in. |
| Annual | 45 °F | 67.8 °F | 69.75 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 | Cfb - Temperate Oceanic Climate |