Colonial Heights, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.7 °C (low) to 21.2 °C (high). Annual precipitation averages 1218.4 Millimeters. Colonial Heights is located in USDA Plant Hardiness Zone 7b. 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 | -2.2 °C | 9.5 °C | 85.09 mm |
| February | -1.4 °C | 11.4 °C | 67.82 mm |
| March | 2.2 °C | 15.6 °C | 100.08 mm |
| April | 7.7 °C | 21.7 °C | 95.5 mm |
| May | 13.1 °C | 25.6 °C | 97.03 mm |
| June | 17.8 °C | 29.8 °C | 115.82 mm |
| July | 20.3 °C | 32.1 °C | 130.81 mm |
| August | 19.3 °C | 31.1 °C | 124.46 mm |
| September | 15.9 °C | 27.8 °C | 129.79 mm |
| October | 8.9 °C | 22.1 °C | 101.6 mm |
| November | 3.1 °C | 16.4 °C | 80.52 mm |
| December | -0.3 °C | 11.3 °C | 89.92 mm |
| Annual | 8.7 °C | 21.2 °C | 1218.44 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 7b : -15°C to -12.2°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 |