Mountain Park, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.1 °C (low) to 21.9 °C (high). Annual precipitation averages 1358.4 Millimeters. Mountain Park is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.4 °C | 10.9 °C | 125.98 mm |
| February | 1.2 °C | 13.2 °C | 122.43 mm |
| March | 4.7 °C | 17.7 °C | 128.78 mm |
| April | 9.2 °C | 22.2 °C | 109.22 mm |
| May | 14.3 °C | 26.3 °C | 102.11 mm |
| June | 18.7 °C | 29.8 °C | 105.92 mm |
| July | 20.7 °C | 31.3 °C | 126.49 mm |
| August | 20.2 °C | 30.9 °C | 106.17 mm |
| September | 16.8 °C | 28 °C | 110.74 mm |
| October | 10.3 °C | 22.7 °C | 93.22 mm |
| November | 4.1 °C | 16.9 °C | 107.7 mm |
| December | 1.3 °C | 12.3 °C | 119.63 mm |
| Annual | 10.1 °C | 21.9 °C | 1358.39 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |