Lebanon, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6 °C (low) to 18.4 °C (high). Annual precipitation averages 1183.4 Millimeters. Lebanon is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.6 °C | 6.4 °C | 91.44 mm |
| February | -3.1 °C | 8.6 °C | 90.93 mm |
| March | 0.3 °C | 13.2 °C | 106.93 mm |
| April | 5.2 °C | 18.9 °C | 104.39 mm |
| May | 10.2 °C | 23.3 °C | 114.05 mm |
| June | 14.8 °C | 27 °C | 116.33 mm |
| July | 16.7 °C | 28.4 °C | 124.97 mm |
| August | 16.1 °C | 28.1 °C | 104.14 mm |
| September | 12.8 °C | 25.6 °C | 87.38 mm |
| October | 5.8 °C | 19.8 °C | 68.33 mm |
| November | 0.4 °C | 13.6 °C | 74.17 mm |
| December | -2.4 °C | 8.4 °C | 100.33 mm |
| Annual | 6 °C | 18.4 °C | 1183.39 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |