Deltaville, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11 °C (low) to 19.7 °C (high). Annual precipitation averages 1241.8 Millimeters. Deltaville 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 | -0.1 °C | 8.5 °C | 88.39 mm |
| February | 0.3 °C | 9.7 °C | 74.93 mm |
| March | 3.5 °C | 13.2 °C | 109.98 mm |
| April | 9.2 °C | 19.2 °C | 92.46 mm |
| May | 14.6 °C | 23.6 °C | 95.5 mm |
| June | 19.7 °C | 28.2 °C | 107.19 mm |
| July | 22.5 °C | 30.5 °C | 129.29 mm |
| August | 21.8 °C | 29.5 °C | 136.14 mm |
| September | 18.9 °C | 26.6 °C | 124.71 mm |
| October | 12.8 °C | 21.2 °C | 112.52 mm |
| November | 6.7 °C | 15.3 °C | 76.45 mm |
| December | 2.4 °C | 10.9 °C | 94.23 mm |
| Annual | 11 °C | 19.7 °C | 1241.79 mm |
| 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 : -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 |