Sandston, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.8 °F (low) to 69.2 °F (high). Annual precipitation averages 46.8 Inches. Sandston is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.8 °F | 48.0 °F | 3.26 in. |
| February | 29.2 °F | 51.4 °F | 2.84 in. |
| March | 36.1 °F | 59.2 °F | 4.45 in. |
| April | 46.2 °F | 70.0 °F | 3.48 in. |
| May | 55.9 °F | 77.2 °F | 4.0 in. |
| June | 64.6 °F | 85.0 °F | 4.42 in. |
| July | 68.9 °F | 89.0 °F | 4.55 in. |
| August | 67.3 °F | 87.2 °F | 4.91 in. |
| September | 61.0 °F | 81.1 °F | 4.57 in. |
| October | 48.5 °F | 70.6 °F | 3.39 in. |
| November | 37.5 °F | 60.4 °F | 3.32 in. |
| December | 31.0 °F | 51.4 °F | 3.58 in. |
| Annual | 47.8 °F | 69.2 °F | 46.77 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |