Urbanna, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.8 °C (low) to 20.5 °C (high). Annual precipitation averages 1220.5 Millimeters. Urbanna is located in USDA Plant Hardiness Zone 8a. 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 | -1.1 °C | 9.1 °C | 85.6 mm |
| February | -0.5 °C | 10.8 °C | 70.87 mm |
| March | 3.2 °C | 14.8 °C | 108.71 mm |
| April | 8.4 °C | 20.4 °C | 90.42 mm |
| May | 13.9 °C | 24.6 °C | 103.12 mm |
| June | 18.8 °C | 28.9 °C | 105.92 mm |
| July | 21.2 °C | 31.3 °C | 124.71 mm |
| August | 20.3 °C | 30.2 °C | 129.29 mm |
| September | 17 °C | 27.3 °C | 125.73 mm |
| October | 10.4 °C | 21.8 °C | 107.7 mm |
| November | 4.7 °C | 15.9 °C | 76.2 mm |
| December | 1 °C | 11.3 °C | 92.2 mm |
| Annual | 9.8 °C | 20.5 °C | 1220.47 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |