Gasburg, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.3 °F (low) to 70.2 °F (high). Annual precipitation averages 47.2 Inches. Gasburg 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. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.1 °F | 49.7 °F | 3.55 in. |
| February | 30.7 °F | 53.3 °F | 2.77 in. |
| March | 37.0 °F | 60.4 °F | 4.13 in. |
| April | 46.5 °F | 70.7 °F | 3.51 in. |
| May | 55.9 °F | 78.0 °F | 3.61 in. |
| June | 64.4 °F | 85.8 °F | 4.6 in. |
| July | 68.6 °F | 89.3 °F | 4.92 in. |
| August | 67.0 °F | 87.3 °F | 4.68 in. |
| September | 60.9 °F | 81.7 °F | 5.11 in. |
| October | 48.6 °F | 71.6 °F | 3.52 in. |
| November | 38.2 °F | 61.4 °F | 3.31 in. |
| December | 32.5 °F | 53.1 °F | 3.48 in. |
| Annual | 48.3 °F | 70.2 °F | 47.19 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| 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 7b : 5°F to 10°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |