Franklin, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.4 °C (low) to 21.8 °C (high). Annual precipitation averages 1265.9 Millimeters. Franklin 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 | -1.3 °C | 10.6 °C | 93.98 mm |
| February | -0.6 °C | 12.3 °C | 71.12 mm |
| March | 3.1 °C | 16.2 °C | 102.62 mm |
| April | 8.4 °C | 21.9 °C | 90.93 mm |
| May | 13.6 °C | 25.9 °C | 97.79 mm |
| June | 18.2 °C | 30.2 °C | 121.16 mm |
| July | 20.6 °C | 32.2 °C | 136.91 mm |
| August | 19.7 °C | 31.2 °C | 138.68 mm |
| September | 16.6 °C | 28.2 °C | 139.95 mm |
| October | 9.7 °C | 22.9 °C | 101.09 mm |
| November | 3.7 °C | 17.3 °C | 82.04 mm |
| December | 0.5 °C | 12.7 °C | 89.66 mm |
| Annual | 9.4 °C | 21.8 °C | 1265.93 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |