Leesburg, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 44.6 °F (low) to 65.9 °F (high). Annual precipitation averages 43 Inches. Leesburg is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.1 °F | 42.4 °F | 3.02 in. |
| February | 25.8 °F | 45.6 °F | 2.43 in. |
| March | 32.7 °F | 54.2 °F | 3.63 in. |
| April | 42.7 °F | 66.2 °F | 3.37 in. |
| May | 52.5 °F | 74.8 °F | 4.48 in. |
| June | 61.4 °F | 83.2 °F | 4.08 in. |
| July | 66.2 °F | 87.9 °F | 4.06 in. |
| August | 64.5 °F | 86.3 °F | 3.28 in. |
| September | 57.4 °F | 79.6 °F | 4.56 in. |
| October | 44.9 °F | 68.1 °F | 3.53 in. |
| November | 34.9 °F | 56.4 °F | 3.05 in. |
| December | 28.1 °F | 46.3 °F | 3.55 in. |
| Annual | 44.6 °F | 65.9 °F | 43.04 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |