Flint Hill, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.3 °C (low) to 19.1 °C (high). Annual precipitation averages 1106.9 Millimeters. Flint Hill is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.9 °C | 6.6 °C | 73.41 mm |
| February | -3.8 °C | 8.4 °C | 59.69 mm |
| March | -0.1 °C | 12.9 °C | 87.12 mm |
| April | 5.4 °C | 19.3 °C | 89.41 mm |
| May | 10.7 °C | 23.7 °C | 114.05 mm |
| June | 15.6 °C | 28.3 °C | 120.14 mm |
| July | 18 °C | 30.6 °C | 107.44 mm |
| August | 17.1 °C | 29.5 °C | 90.42 mm |
| September | 13.1 °C | 26.2 °C | 118.87 mm |
| October | 6.7 °C | 20.3 °C | 86.36 mm |
| November | 1 °C | 14.1 °C | 79.5 mm |
| December | -2.7 °C | 8.8 °C | 80.52 mm |
| Annual | 6.3 °C | 19.1 °C | 1106.93 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |