Warrenton, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.1 °C (low) to 21.6 °C (high). Annual precipitation averages 1186.4 Millimeters. Warrenton 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.7 °C | 10 °C | 90.42 mm |
| February | -0.6 °C | 12 °C | 71.37 mm |
| March | 2.9 °C | 16.1 °C | 106.43 mm |
| April | 8.1 °C | 21.9 °C | 90.42 mm |
| May | 13.3 °C | 26.1 °C | 92.2 mm |
| June | 18 °C | 30.4 °C | 114.05 mm |
| July | 20.3 °C | 32.3 °C | 121.41 mm |
| August | 19.5 °C | 31.2 °C | 112.01 mm |
| September | 16.1 °C | 27.9 °C | 128.02 mm |
| October | 9.2 °C | 22.3 °C | 89.15 mm |
| November | 3.4 °C | 16.5 °C | 83.06 mm |
| December | 0.2 °C | 11.9 °C | 87.88 mm |
| Annual | 9.1 °C | 21.6 °C | 1186.42 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |