Franktown, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.4 °F (low) to 67.9 °F (high). Annual precipitation averages 46.1 Inches. Franktown 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. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 30.9 °F | 47.7 °F | 3.54 in. |
| February | 32.0 °F | 49.9 °F | 3.0 in. |
| March | 38.0 °F | 56.1 °F | 4.14 in. |
| April | 47.4 °F | 66.9 °F | 3.47 in. |
| May | 57.1 °F | 75.1 °F | 3.49 in. |
| June | 66.0 °F | 83.4 °F | 3.94 in. |
| July | 71.0 °F | 87.5 °F | 4.6 in. |
| August | 68.9 °F | 85.4 °F | 4.59 in. |
| September | 63.5 °F | 80.4 °F | 4.53 in. |
| October | 52.4 °F | 70.6 °F | 4.0 in. |
| November | 42.0 °F | 59.9 °F | 2.97 in. |
| December | 35.3 °F | 51.9 °F | 3.85 in. |
| Annual | 50.4 °F | 67.9 °F | 46.12 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |