Washington Park, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11 °C (low) to 22.3 °C (high). Annual precipitation averages 1343.4 Millimeters. Washington Park is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.6 °C | 12 °C | 93.22 mm |
| February | 1.6 °C | 13.7 °C | 83.57 mm |
| March | 4.9 °C | 17.5 °C | 103.38 mm |
| April | 10.2 °C | 22.4 °C | 88.65 mm |
| May | 15.1 °C | 26.3 °C | 118.87 mm |
| June | 19.7 °C | 30.1 °C | 127.25 mm |
| July | 21.8 °C | 31.8 °C | 138.68 mm |
| August | 21 °C | 30.8 °C | 149.86 mm |
| September | 18 °C | 28.1 °C | 164.08 mm |
| October | 11.5 °C | 23.3 °C | 103.12 mm |
| November | 5.6 °C | 18.1 °C | 84.33 mm |
| December | 2.3 °C | 13.8 °C | 88.39 mm |
| Annual | 11 °C | 22.3 °C | 1343.4 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |