Culpeper, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7 °C (low) to 19.7 °C (high). Annual precipitation averages 1150.9 Millimeters. Culpeper is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.3 °C | 7.3 °C | 77.98 mm |
| February | -3.3 °C | 9.1 °C | 70.36 mm |
| March | 0.5 °C | 13.8 °C | 96.27 mm |
| April | 6.2 °C | 20.2 °C | 92.96 mm |
| May | 11.7 °C | 24.5 °C | 113.28 mm |
| June | 16.4 °C | 28.9 °C | 121.67 mm |
| July | 19.1 °C | 31.4 °C | 102.62 mm |
| August | 18.1 °C | 30.2 °C | 84.33 mm |
| September | 14 °C | 26.6 °C | 126.75 mm |
| October | 6.8 °C | 20.6 °C | 91.19 mm |
| November | 1.2 °C | 14.6 °C | 91.69 mm |
| December | -2.3 °C | 9.3 °C | 81.79 mm |
| Annual | 7 °C | 19.7 °C | 1150.89 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |