Morven, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.4 °C (low) to 26 °C (high). Annual precipitation averages 1318 Millimeters. Morven is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.1 °C | 16.9 °C | 122.94 mm |
| February | 5.9 °C | 19.1 °C | 103.89 mm |
| March | 8.8 °C | 22.7 °C | 128.02 mm |
| April | 12.4 °C | 26.3 °C | 88.39 mm |
| May | 16.8 °C | 30 °C | 72.64 mm |
| June | 20.8 °C | 32.3 °C | 153.16 mm |
| July | 22 °C | 33.2 °C | 143.51 mm |
| August | 21.9 °C | 32.9 °C | 146.3 mm |
| September | 19.7 °C | 30.9 °C | 113.54 mm |
| October | 14.1 °C | 26.9 °C | 82.55 mm |
| November | 8.3 °C | 21.9 °C | 68.58 mm |
| December | 5.6 °C | 18.3 °C | 94.49 mm |
| Annual | 13.4 °C | 26 °C | 1318.01 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |