Washington, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.8 °F (low) to 72.1 °F (high). Annual precipitation averages 52.9 Inches. Washington 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 | 33.1 °F | 53.4 °F | 3.67 in. |
| February | 34.8 °F | 56.6 °F | 3.29 in. |
| March | 40.8 °F | 63.4 °F | 4.07 in. |
| April | 50.2 °F | 72.4 °F | 3.49 in. |
| May | 59.1 °F | 79.3 °F | 4.68 in. |
| June | 67.4 °F | 86.2 °F | 5.0 in. |
| July | 71.3 °F | 89.3 °F | 5.46 in. |
| August | 69.7 °F | 87.3 °F | 5.89 in. |
| September | 64.3 °F | 82.4 °F | 6.46 in. |
| October | 52.6 °F | 73.9 °F | 4.05 in. |
| November | 42.0 °F | 64.2 °F | 3.32 in. |
| December | 36.0 °F | 56.7 °F | 3.48 in. |
| Annual | 51.8 °F | 72.1 °F | 52.86 in. |
| 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 : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |