Dortches, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.7 °C (low) to 21.6 °C (high). Annual precipitation averages 1207 Millimeters. Dortches 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 | -0.8 °C | 10.6 °C | 90.17 mm |
| February | 0 °C | 12.4 °C | 71.63 mm |
| March | 3.6 °C | 16.3 °C | 103.63 mm |
| April | 8.7 °C | 21.8 °C | 87.88 mm |
| May | 13.9 °C | 25.8 °C | 87.88 mm |
| June | 18.7 °C | 29.9 °C | 109.98 mm |
| July | 21 °C | 31.9 °C | 125.73 mm |
| August | 20.1 °C | 30.7 °C | 129.54 mm |
| September | 16.7 °C | 27.6 °C | 148.08 mm |
| October | 9.9 °C | 22.4 °C | 86.11 mm |
| November | 4 °C | 17 °C | 81.53 mm |
| December | 0.8 °C | 12.4 °C | 84.84 mm |
| Annual | 9.7 °C | 21.6 °C | 1207 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |