Mount Sidney, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 43.2 °F (low) to 65.7 °F (high). Annual precipitation averages 39.4 Inches. Mount Sidney 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 | 23.7 °F | 43.7 °F | 2.73 in. |
| February | 25.8 °F | 47.2 °F | 2.18 in. |
| March | 31.9 °F | 55.0 °F | 3.26 in. |
| April | 41.6 °F | 66.4 °F | 3.23 in. |
| May | 51.2 °F | 74.3 °F | 3.91 in. |
| June | 60.0 °F | 82.2 °F | 4.11 in. |
| July | 63.7 °F | 85.8 °F | 4.06 in. |
| August | 62.1 °F | 84.5 °F | 3.74 in. |
| September | 55.1 °F | 78.3 °F | 3.98 in. |
| October | 43.3 °F | 67.7 °F | 2.54 in. |
| November | 33.2 °F | 56.6 °F | 2.63 in. |
| December | 27.1 °F | 47.1 °F | 2.99 in. |
| Annual | 43.2 °F | 65.7 °F | 39.36 in. |
| 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 : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |